| 1 | Ancient Greek | ἱστορία | inquiry, examination, systematic observation,... |
| 2 | Ancient Greek | ἱστορέω | to inquire, ask; to examine, observe; to record,... |
| 3 | Ancient Greek | ἵστωρ | one who knows law and right, judge; witness; a... |
| 4 | Proto-Hellenic | wístōr | — |
| 5 | Proto-Indo-European | wéydtōr | one who has seen, one who knows |
| 6 | Indo-European | *weyd- | — |