okʷ- / Indo-European roots


To see.

Oldest form *h3ekw-, colored to *h3okw-, zero-grade *h3kw-.

Derivatives include eye, daisy, window, inoculate, autopsy.

a. eye; daisy from Old English ēage, eye;
b. walleyed, window from Old Norse auga, eye;
c. augen from German Auge, eye;
d. ogle from Low German oog, oge, eye. a-d all from Germanic *augōn- (with taboo deformation).
2. Suffixed form *okw-olo-.
a. eyelet, ocellus, ocular, oculist, oculus, ullage; antler, inoculate, monocle, oculomotor, pinochle from Latin oculus, eye;
b. inveigle from French aveugle, blind, from Gallo-Latin compound *ab-oculus, blind, calqued on Gaulish exs-ops, blind.
3. Form *okw-s. ceratopsian, metopic, myopia, nyctalopia, Pelops, phlogopite, prosopography, prosopopeia, pyrope, triceratops from Greek ōps, eye (and stem *op-, to see).
4. Suffixed form *okw-s-. cushy perhaps from Urdu khuš, good, from Persian khvaš, from Middle Persian xvašš, perhaps from Old Iranian *khvaxši-, having a good appearance, from *axšši, eye (Avestan aši-) (hu-, xw-, good; see esu-)
5. Suffixed form *okw-ti-. opsin, -opsis, -opsy; autopsy, dropsy, iodopsin, rhodopsin, synopsis from Greek opsis, sight, appearance.
6. Suffixed form *okw-to-. optic; diopter, optoelectronics, optometry, panoptic from Greek optos, seen, visible.
7. Suffixed form *okw-ā-. metope from Greek opē, opening.
8. Suffixed form *okw-mn̥. ommatidium, ommatophore from Greek omma (< *opma), eye.
9. Suffixed form *okw-tro-. catoptric from Greek katoptron, "back-looker" mirror (kata-, down, back; see kat-)
10. ophthalmo-; exophthalmos from Greek ophthalmos, eye (with taboo deformation).
11. Zero-grade form *əkw-, in compounds (see ant-, āter-, ghwer-)

[Pokorny ok̒ͧ- 775.]

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