English
exotropia
Exotropia comes from Ancient Greek τρόπος ‘a turn’, and goes back to Proto-Indo-European *trep-.
- Proto-Indo-Europeanc. 4500–2500 BCE*trep-‘to turn’reconstructed
- Ancient Greekc. 800–300 BCEτρέπω‘turn, divert, turn back, rout an enemy’
- Ancient Greek, derivedc. 800–300 BCEτρόποςtrópos‘a turn’
- Englishtodayexotropia
attested reconstructed ? uncertain or disputed
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*trep-‘to turn’reconstructed
- Ancient Greekc. 800–300 BCEτρέπω‘turn, divert, turn back, rout an enemy’
- Ancient Greek, derivedc. 800–300 BCEτρόποςtrópos‘a turn’
- Englishtodayexotropia
Formed from exo- + -tropia
Proto-Indo-European *h₁eǵʰs ‘out of’
Proto-Hellenic *eks
Ancient Greek ἐκ ‘Out of, from’
Ancient Greek ἔξω ‘outer’
English exo-
Linked words
through Proto-Indo-European *trep- ‘to turn’
thrive, intrepid, trepidation, turpitude, 30 more
through Ancient Greek τρέπω ‘turn, divert, turn back, rout an enemy’
through Ancient Greek τρόπος ‘a turn’
Today it means
noun A form of strabismus in which the eyes deviate outwards.
Language periods are conventional ranges, not dates for this word.
Etymograph / Proto-Indo-European *trep- / exotropia