User:Daniel Mietchen/Sandbox/Popular Pages/251-500

•  PWA [r]: A New Deal era government agency created in 1933 and closed in 1939 that made contracts with private firms for the construction of public works, with an aim to bring the U.S. economy out of the Great Depression. ^[e] 1280
•  Bacteriophage [r]: A virus that infects bacteria; often called a phage. ^[e] 1278
•  Medical ethics [r]: The study of moral values as they apply to medicine. ^[e] 1277
•  Default risk premium [r]: The portion of a nominal interest rate or bond yield that represents compensation for the possibility of default. ^[e] 1274
• Chemical compound/Catalogs/Organic compounds [r]: Add brief definition or description 1273
•  Computer network [r]: A collection of computers or digital devices ("nodes") connected by communication links. ^[e] 1271
•  Scientific journal [r]: A publication venue for original research and scholarly review articles — for more than three centuries on paper and now increasingly online. ^[e] 1270
•  Neutron [r]: An elementary particle of neutral charge, normally found in the nucleus of chemical elements, but having significant effects when in free flight; the number of neutrons in the nucleus of an element defines its identity as an isotope ^[e] 1269
•  Garrett Morgan [r]: African American inventor and businessman who is well-known for his protective breathing hood, a variety of hair-straightening and cosmetic preparations, and a type of traffic signal. ^[e] 1266
•  Joule-Thomson effect [r]: The increase or decrease in the temperature of a real gas (as differentiated from an ideal gas) when it is allowed to expand freely at constant enthalpy (meaning that no heat is transferred to or from the gas, and no external work is extracted from the gas). ^[e] 1264
•  John Dalton [r]: English pioneer chemist and meteorologist (1766-1844), formulated the first quantitative atomic theory. ^[e] 1264
•  Johannes Gutenberg [r]: German goldsmith and inventor of movable type printing. ^[e] 1258
•  Demographic transition [r]: The theory that societies progress from a premodern regime of high fertility and high mortality to a postmodern regime of low fertility and low mortality. ^[e] 1258
•  Confederate States of America [r]: Government formed by eleven southern states of the United States between 1861 and 1865, during the American Civil War. ^[e] 1255
•  Genetics [r]: The study of the inheritance of characteristics, genes and DNA. ^[e] 1254
•  Iraq War [r]: (2003-2011) Invasion and occupation of Iraq by a coalition of countries led by the U.S. to depose Saddam Hussein who was accused of stockpiling weapons of mass destruction (which were never found). ^[e] 1252
•  Culture of Japan [r]: Set of traditions, pastimes, artistic expression, use of language, belief systems and so on that distinguishes Japan from other nations. ^[e] 1252
•  Radar [r]: Acronym for "radio detection and ranging"; a system used to locate a distant object by transmission of radio waves and reception of their reflection. ^[e] 1251
•  Red blood cells [r]: Also called erythrocytes; a type of disc-shaped blood cell that contain hemoglobin, and the body's principal means of delivering oxygen to the body's cells via the blood, and the removal of carbon dioxide wastes that result from metabolism. ^[e] 1246
•  Natural gas processing [r]: Industrial facilities that process raw natural gas to remove contaminants as well as to separate out and recover by product natural gas liquids. ^[e] 1246
•  Racism in Australia [r]: The history of racism and restrictive immigration policies in the Commonwealth of Australia. ^[e] 1244
•  Healing arts [r]: The health sciences, forms of complementary and alternative medicine, and traditional practices aimed at curing disease, healing injury and promoting wellness. ^[e] 1241
•  Plymouth Colony [r]: English colony in North America, 1620-1691, until it was absorbed by Massachusetts. ^[e] 1235
•  Organism [r]: An individual living individual: a complex, adaptive physical system that acts a integrated unit that sustains metabolism and reproduces progeny that resemble it. ^[e] 1232
•  Latin America [r]: The region of the Americas that shares a common tradition and historical heritage of European colonization, mostly Iberian. ^[e] 1232
•  Henry's law [r]: The relationship between the amount of gas dissolved in a liquid and the partial pressure of that gas above the liquid. ^[e] 1228
• Choosing a cat [r]: Add brief definition or description 1225
•  Nazi military and SS ranks [r]: Ranks used in the military (Heer/Army, Navy, and Luftwaffe/Air Force) as well as the SS and other Nazi paramilitary formations ^[e] 1221
•  Quakers [r]: Protestant denomination founded among English Puritans in the 17th century by George Fox and characterized by pacifism and the belief that Christ works directly in the soul of the believer; known formally as the Religious Society of Friends. ^[e] 1220
•  Fungus [r]: A eukaryotic organism, classified into the kingdom Fungi, that is heterotrophic and digest their food externally, and may be a yeast, mold, or mushroom. ^[e] 1220
•  Microorganism [r]: A 'germ', an organism that is too small to be seen individually with the naked eye. ^[e] 1219
•  Influenza [r]: Add brief definition or description 1215
•  Charles Dickens [r]: Add brief definition or description 1213
•  Animal [r]: Add brief definition or description 1213
•  Biotechnology and plant breeding [r]: Add brief definition or description 1212
•  Microbiology [r]: Add brief definition or description 1212
•  Electromagnetic wave [r]: Add brief definition or description 1210
•  Spherical harmonics [r]: Add brief definition or description 1210
•  Geoffrey Chaucer [r]: Add brief definition or description 1208
•  Hydrocracking [r]: Add brief definition or description 1204
•  Science [r]: Add brief definition or description 1203
•  Evolution [r]: Add brief definition or description 1202
•  Alexander Hamilton [r]: Add brief definition or description 1202
•  Sociology [r]: Add brief definition or description 1198
•  MEDLINE [r]: Add brief definition or description 1197
• History of the Democratic Party (United States) [r]: Add brief definition or description 1195
•  Tennis [r]: Add brief definition or description 1186
•  Charles Darwin [r]: Add brief definition or description 1186
•  Roman Catholic Church [r]: Add brief definition or description 1185
•  Vapor pressure [r]: Add brief definition or description 1184
•  Systems biology [r]: Add brief definition or description 1184
•  Egypt [r]: Add brief definition or description 1184
•  Water [r]: Add brief definition or description 1175
•  Mac OS X [r]: Add brief definition or description 1175
•  Neptune (planet) [r]: Add brief definition or description 1175
•  Richard Nixon [r]: Add brief definition or description 1173
•  U.S. Declaration of Independence [r]: Add brief definition or description 1173
•  Human Immunodeficiency Virus [r]: Add brief definition or description 1170
•  President of the United States of America [r]: Add brief definition or description 1164
•  Block cipher [r]: Add brief definition or description 1160
•  Endosymbiotic theory [r]: Add brief definition or description 1160
•  Vapor-compression refrigeration [r]: Add brief definition or description 1160
•  Booker T. Washington [r]: Add brief definition or description 1159
•  Real number [r]: Add brief definition or description 1158
•  Hudson River [r]: Add brief definition or description 1157
•  Order (relation) [r]: Add brief definition or description 1155
•  Replication of a circular bacterial chromosome [r]: Add brief definition or description 1153
•  Meridian (Chinese medicine) [r]: Add brief definition or description 1152
•  Density (chemistry) [r]: Add brief definition or description 1150
•  Architecture [r]: Add brief definition or description 1150
•  Uranus (planet) [r]: Add brief definition or description 1149
•  Randomized controlled trial [r]: Add brief definition or description 1148
•  Bread [r]: Add brief definition or description 1144
•  Claus process [r]: Add brief definition or description 1139
•  Socrates [r]: Add brief definition or description 1138
•  Ronald Reagan [r]: Add brief definition or description 1135
•  Scotland Yard [r]: Add brief definition or description 1135
•  French Revolution [r]: Add brief definition or description 1135
•  Energy (science) [r]: Add brief definition or description 1130
•  Air preheater [r]: Add brief definition or description 1125
•  IS-LM model [r]: Add brief definition or description 1124
•  Naval guns and gunnery [r]: Add brief definition or description 1124
•  Catalytic reforming [r]: Add brief definition or description 1122
•  Motivation [r]: Add brief definition or description 1117
•  Medicine [r]: Add brief definition or description 1115
•  John Steinbeck [r]: Add brief definition or description 1114
•  American Revolution, naval history [r]: Add brief definition or description 1113
•  Terrorism [r]: Add brief definition or description 1113
•  Reconstruction [r]: Add brief definition or description 1111
•  Panic of 1893 [r]: Add brief definition or description 1111
•  Gold [r]: Add brief definition or description 1108
•  World Wide Web [r]: Add brief definition or description 1102
• Vietnam War military technology [r]: Add brief definition or description 1102
• Assault Breacher Vehicle [r]: Add brief definition or description 1100
•  Metaphor [r]: Add brief definition or description 1093
•  Heat of combustion [r]: Add brief definition or description 1091
•  Scotland [r]: Add brief definition or description 1091
•  Complexity of algorithms [r]: Add brief definition or description 1087
•  Phosphorus [r]: Add brief definition or description 1082
•  Creole (language) [r]: Add brief definition or description 1081
•  John D. Rockefeller [r]: Add brief definition or description 1079
•  Islam [r]: Add brief definition or description 1078
•  Korean War [r]: Add brief definition or description 1077
•  Unix [r]: Add brief definition or description 1076
•  Ideal gas law [r]: Add brief definition or description 1076
•  Thermodynamics [r]: Add brief definition or description 1074
•  Normal distribution [r]: Add brief definition or description 1072
•  The Canterbury Tales [r]: Add brief definition or description 1068
•  Archaea [r]: Add brief definition or description 1064
•  History of scientific method [r]: Add brief definition or description 1060
•  Butler [r]: Add brief definition or description 1059
•  Stack frame [r]: Add brief definition or description 1058
•  Marcia Angell [r]: Add brief definition or description 1056
•  Lactobacillus casei [r]: Add brief definition or description 1054
•  Child sexual abuse [r]: Add brief definition or description 1054
•  Antonie van Leeuwenhoek [r]: Add brief definition or description 1053
•  Orchid [r]: Add brief definition or description 1041
•  Lebanon [r]: Add brief definition or description 1039
•  Fossilization (language acquisition) [r]: Add brief definition or description 1039
• World War I, Homefront [r]: Add brief definition or description 1036
•  Mercer Beasley [r]: Add brief definition or description 1035
•  Television [r]: Add brief definition or description 1030
•  Barack Obama [r]: Add brief definition or description 1029
•  Computer architecture [r]: Add brief definition or description 1029
•  Cold War [r]: Add brief definition or description 1028
•  Sensitivity and specificity [r]: Add brief definition or description 1027
•  Clostridium tetani [r]: Add brief definition or description 1026
•  Adrenergic beta-antagonist [r]: Add brief definition or description 1025
• World War I, American Entry [r]: Add brief definition or description 1023
• Black history [r]: Add brief definition or description 1020
•  Compellence [r]: Add brief definition or description 1020
•  U.S. Electoral College [r]: Add brief definition or description 1019
•  American Revolution [r]: Add brief definition or description 1018
•  Chinese characters [r]: Add brief definition or description 1013
•  Textile industry, history [r]: Add brief definition or description 1011
• SR-71 Blackbird [r]: Add brief definition or description 1010
•  Wiki [r]: Add brief definition or description 1010
•  Horse colors [r]: Add brief definition or description 1010
•  Tux [r]: Add brief definition or description 1005
•  Computer science [r]: Add brief definition or description 1003
•  Venus (planet) [r]: Add brief definition or description 1001
•  Parts-per notation [r]: Add brief definition or description 1001
•  Large-scale trickle filters [r]: Add brief definition or description 1000
•  Israel [r]: Add brief definition or description 997
•  Ontological argument for the existence of God [r]: Add brief definition or description 997
•  Church of Scientology [r]: Add brief definition or description 996
•  Martin Luther [r]: Add brief definition or description 995
•  Shirley Chisholm [r]: Add brief definition or description 991
•  Buddhism [r]: Add brief definition or description 990
• Race [r]: Add brief definition or description 990
•  Bolognese sauce [r]: Add brief definition or description 990
•  Great Wall of China [r]: Add brief definition or description 987
•  Personal computer [r]: Add brief definition or description 985
• Penguin/Catalogs/Penguins in the northern hemisphere [r]: Add brief definition or description 985
• Japan/Gallery [r]: Add brief definition or description 985
•  God [r]: Add brief definition or description 983
• Biology/Draft [r]: Add brief definition or description 983
•  Linguistic variation [r]: Add brief definition or description 982
•  Cloud computing [r]: Add brief definition or description 981
•  Resistor [r]: Add brief definition or description 980
•  Chemical elements [r]: Add brief definition or description 979
•  Gross Domestic Product [r]: Add brief definition or description 978
•  Point (geometry) [r]: Add brief definition or description 977
•  Anglicanism [r]: Add brief definition or description 972
•  Pi (mathematical constant) [r]: Add brief definition or description 971
•  Abraham Lincoln [r]: Add brief definition or description 971
•  Intermolecular forces [r]: Add brief definition or description 970
•  Air pollution dispersion modeling [r]: Add brief definition or description 968
•  Brain evolution [r]: Add brief definition or description 967
•  Kerala [r]: Add brief definition or description 967
•  Eastern Orthodox Church [r]: Add brief definition or description 966
•  Newton's method [r]: Add brief definition or description 965
•  Porphyromonas gingivalis [r]: Add brief definition or description 962
•  Primate [r]: Add brief definition or description 960
•  Video game [r]: Add brief definition or description 960
•  American Revolution, military history [r]: Add brief definition or description 959
•  English language [r]: Add brief definition or description 958
•  Specific heat ratio [r]: Add brief definition or description 957
•  William Harvey [r]: Add brief definition or description 957
•  Larry Sanger [r]: Add brief definition or description 949
•  Doctor Who [r]: Add brief definition or description 946
•  Lumbalgia [r]: Add brief definition or description 946
•  Natural gas [r]: Add brief definition or description 946
•  Pseudomonas putida [r]: Add brief definition or description 946
•  Earth science [r]: Add brief definition or description 944
•  Lyndon B. Johnson [r]: Add brief definition or description 942
•  Logarithm [r]: Add brief definition or description 941
•  Panthera tigris (Tiger) [r]: Add brief definition or description 941
•  Mexican-American War [r]: Add brief definition or description 941
•  Music and emotion [r]: Add brief definition or description 940
•  Geta [r]: Add brief definition or description 940
•  Zimmerman Telegram [r]: Add brief definition or description 938
•  John Franklin [r]: Add brief definition or description 936
•  Transposon [r]: Add brief definition or description 931
•  BMW R60-2 [r]: Add brief definition or description 929
•  Atmospheric reentry [r]: Add brief definition or description 928
•  Logic [r]: Add brief definition or description 928
•  Bacillus subtilis [r]: Add brief definition or description 927
•  Milpa agriculture [r]: Add brief definition or description 927
•  Boiling point [r]: Add brief definition or description 923
•  Matrix [r]: Add brief definition or description 921
•  Hemispheric lateralization [r]: Add brief definition or description 921
•  Law of diminishing returns [r]: Add brief definition or description 919
•  Heavy metal (music) [r]: Add brief definition or description 918
•  Exothermic reaction [r]: Add brief definition or description 915
•  Circulatory system [r]: Add brief definition or description 914
•  Jacques Derrida [r]: Add brief definition or description 911
•  Colonial America [r]: Add brief definition or description 910
•  Frederick Jackson Turner [r]: Add brief definition or description 909
•  Asphalt (paving) [r]: Add brief definition or description 908
•  Second Great Awakening [r]: Add brief definition or description 905
•  Haber process [r]: Add brief definition or description 905
•  Antibiotic [r]: Add brief definition or description 905
•  Drug toxicity [r]: Add brief definition or description 905
•  Korean War of 1592-1598 [r]: Add brief definition or description 903
•  Taj Mahal [r]: Add brief definition or description 901
• Bowling [r]: Add brief definition or description 897
•  Vasopressin [r]: Add brief definition or description 896
• Quantum mechanics/Advanced [r]: Add brief definition or description 895
•  Jacksonian Democracy [r]: Add brief definition or description 895
•  Homeopathy [r]: Add brief definition or description 893
•  Oxygen [r]: Add brief definition or description 893
•  John F. Kennedy [r]: Add brief definition or description 892
•  German dialects [r]: Add brief definition or description 891
•  Flash evaporation [r]: Add brief definition or description 890
•  Syntax (linguistics) [r]: Add brief definition or description 888
•  Software engineering [r]: Add brief definition or description 886
•  Quorum sensing [r]: Add brief definition or description 886
•  Discount rate [r]: Add brief definition or description 883
•  Grover Cleveland [r]: Add brief definition or description 882
•  Japanese language [r]: Add brief definition or description 880
•  Steroid [r]: Add brief definition or description 879
•  Middle Ages [r]: Add brief definition or description 876
•  Sigmund Freud [r]: Add brief definition or description 874
•  Citric acid cycle [r]: Add brief definition or description 874
•  Amine gas treating [r]: Add brief definition or description 874
•  Origin of music [r]: Add brief definition or description 873
•  International System of Units [r]: Add brief definition or description 871
•  Battle of Okinawa [r]: Add brief definition or description 869
•  Plane (geometry) [r]: Add brief definition or description 868
•  Jimmy Page [r]: Add brief definition or description 867
•  James Madison [r]: Add brief definition or description 867
•  First Punic War [r]: Add brief definition or description 867
•  The Beatles [r]: Add brief definition or description 866
•  Reboiler [r]: Add brief definition or description 866
•  Air pollution dispersion terminology [r]: Add brief definition or description 865
•  Gyrification [r]: Add brief definition or description 865
•  Coal [r]: Add brief definition or description 864
•  Benjamin Franklin [r]: Add brief definition or description 864
•  Spoken language [r]: Add brief definition or description 863