| 1 | English | epochal | of or pertaining to an epoch; highly important or... |
| 2 | English | epoch | A particular period of history, "especially" one... |
| 3 | Medieval Latin | epocha | age, period, time, season, epoch |
| 4 | Ancient Greek | ἐποχή | check, cessation; suspension of judgement;... |
| 5 | Ancient Greek | ἐπέχω | I have or hold upon |
| 6 | Ancient Greek | ἐπι- | on, upon, on top of, all over, covering; on,... |
| 7 | Ancient Greek | ἐπί | as well, besides; For usage in composition, see... |
| 8 | Ancient Greek | Ἡμέρα | — |
| 9 | Ancient Greek | ἦμαρ | day; by day; midday |
| 10 | Proto-Hellenic | ā́mər | — |
| 11 | Proto-Indo-European | h₂eh₃mr̥ | heat |
| 12 | Proto-Indo-European | h₂eh₃- | to be hot; to burn |