| 1 | English | cosmid | A type of plasmid constructed by the insertion... |
| 2 | English | Cos | — |
| 3 | English | co | Clipping of company; they; them |
| 4 | English | company | A team; a group of people who work together... |
| 5 | Middle English | companye | A company, band, small group, or team of people;... |
| 6 | Old French | compaignie | companionship |
| 7 | Old French | compain | Alternative form of compaing; friend; companion |
| 8 | Latin | compāniō | — |
| 9 | Latin | com- | allomorph of con- |
| 10 | Latin | con- | Used in compounds to indicate a being or bringing... |
| 11 | Latin | cum | with, along with; at; -fold |
| 12 | Old Latin | com | Alternative form of cum |
| 13 | Proto-Italic | kom | with, along, at |
| 14 | Proto-Indo-European | ḱóm | beside, near, by, with |
| 15 | Proto-Indo-European | ḱe | Deictic particle, here; Post-positional... |
| 16 | Middle English | kyt | — |
| 17 | Russian | кит | whale; genitive plural of ки́та |
| 18 | Old Church Slavonic | китъ | whale |
| 19 | Ancient Greek | κῆτος | whale, sea monster; abyss |