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10,033 things · 1,886 votes cast · cast a vote
All | Arts | Biology and health sciences | Everyday life | Geography | History | Mathematics | People | Philosophy and religion | Physical sciences | Society and social sciences | Technology
| # | Thing | Description | Topic | Up/Down/Net | Score ▼ | |
|---|---|---|---|---|---|---|
| 1051 |  | Acanthodii | Extinct paraphyletic class of fishes | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 1052 |  | Acceleration | Rate of change of velocity | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1053 |  | Accipiter | Genus of birds | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 1054 |  | Accordion | Bellows-driven free-reed aerophone musical instrument | Arts | +0 / -0 / 0 | 0.500000 |
| 1055 | Accounting | Recording economic information | Society and social sciences | +0 / -0 / 0 | 0.500000 | |
| 1056 |  | Accuracy and precision | Measures of observational error | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1057 |  | Aceh | Autonomous province in Sumatra, Indonesia | Geography | +0 / -0 / 0 | 0.500000 |
| 1058 |  | Acetone | Organic compound ((CH3)2CO); simplest ketone | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1059 |  | Achaemenid Empire | Ancient Iranian empire, 550–330 BC | History | +0 / -0 / 0 | 0.500000 |
| 1060 |  | Achilles | Greek mythological hero | Philosophy and religion | +0 / -0 / 0 | 0.500000 |
| 1061 |  | Acid | Chemical compound giving a proton or accepting an electron pair | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1062 |  | Acid–base reaction | Chemical reaction between an acid and a base | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1063 |  | Acne | Skin condition characterized by pimples | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 1064 |  | Aconcagua | Highest mountain in the Americas | Geography | +0 / -0 / 0 | 0.500000 |
| 1065 |  | Acoustics | Branch of physics involving mechanical waves | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1066 |  | Acrobatics | Feats of balance and agility | Arts | +0 / -0 / 0 | 0.500000 |
| 1067 |  | Acropolis of Athens | Ancient citadel above the city of Athens | Arts | +0 / -0 / 0 | 0.500000 |
| 1068 | Acting | Storytelling by enacting a character | Arts | +0 / -0 / 0 | 0.500000 | |
| 1069 |  | Actinide | F-block chemical elements | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1070 |  | Actinium | Chemical element with atomic number 89 (Ac) | Physical sciences | +0 / -0 / 0 | 0.500000 |
| 1071 |  | Actinopterygii | Class of ray-finned bony fishes | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 1072 |  | Action figure | Character toy figurine made commonly of plastic | Everyday life | +0 / -0 / 0 | 0.500000 |
| 1073 | Active galactic nucleus | Compact region at a galaxy's center with abnormally high luminosity | Physical sciences | +0 / -0 / 0 | 0.500000 | |
| 1074 | Active transport | Cellular molecule transport mechanism against the concentration gradient | Biology and health sciences | +0 / -0 / 0 | 0.500000 | |
| 1075 |  | Activism | Efforts to make change in society toward a perceived greater good | Society and social sciences | +0 / -0 / 0 | 0.500000 |
| 1076 | Actor | Person who portrays a character in a production | Arts | +0 / -0 / 0 | 0.500000 | |
| 1077 |  | Acupuncture | Pseudoscientific needling treatment | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 1078 |  | Ada Lovelace | English mathematician (1815–1852) | People | +0 / -0 / 0 | 0.500000 |
| 1079 |  | Adam Mickiewicz | PoIish writer and activist (1798–1855) | People | +0 / -0 / 0 | 0.500000 |
| 1080 |  | Adam Smith | Scottish economist and philosopher (1723–1790) | People | +0 / -0 / 0 | 0.500000 |
| 1081 |  | Adam and Eve | First man and woman in Abrahamic creation myth | Philosophy and religion | +0 / -0 / 0 | 0.500000 |
| 1082 |  | Adana | City in Turkey | Geography | +0 / -0 / 0 | 0.500000 |
| 1083 |  | Adansonia | Genus of trees known as baobab | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 1084 | Adaptation | Evolutionary process | Biology and health sciences | +0 / -0 / 0 | 0.500000 | |
| 1085 |  | Adder | Species of venomous snake | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 1086 |  | Addiction | Disorder resulting in compulsive behaviors | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 1087 |  | Addis Ababa | Capital and largest city of Ethiopia | Geography | +0 / -0 / 0 | 0.500000 |
| 1088 |  | Addition | Arithmetic operation | Mathematics | +0 / -0 / 0 | 0.500000 |
| 1089 |  | Adelaide | Capital city of South Australia | Geography | +0 / -0 / 0 | 0.500000 |
| 1090 |  | Aden | Temporary capital of Yemen | Geography | +0 / -0 / 0 | 0.500000 |
| 1091 |  | Adenosine triphosphate | Energy-carrying molecule in living cells | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 1092 |  | Adhesive | Non-metallic material used to bond various materials together | Technology | +0 / -0 / 0 | 0.500000 |
| 1093 |  | Adivasi | Varied tribal groups in the Indian subcontinent | Society and social sciences | +0 / -0 / 0 | 0.500000 |
| 1094 | Adjective | Part of speech that defines a noun or pronoun | Society and social sciences | +0 / -0 / 0 | 0.500000 | |
| 1095 | Administrative law | Branch of law governing administrative agencies | Society and social sciences | +0 / -0 / 0 | 0.500000 | |
| 1096 |  | Adolescence | Human transition from puberty to adult | Everyday life | +0 / -0 / 0 | 0.500000 |
| 1097 |  | Adolf Hitler | Dictator of Germany from 1933 to 1945 | People | +0 / -0 / 0 | 0.500000 |
| 1098 |  | Adolphe Thiers | President of France from 1871 to 1873 | People | +0 / -0 / 0 | 0.500000 |
| 1099 |  | Adoption | Parenting a child in place of the original parents | Everyday life | +0 / -0 / 0 | 0.500000 |
| 1100 | Adposition | Class of words expressing spatiotemporal relations or semantic roles | Society and social sciences | +0 / -0 / 0 | 0.500000 |
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