English
gonioscope
Gonioscope comes from Ancient Greek σκοπέω ‘to look, look at, behold’, from σκοπός ‘watcher, lookout’, and ultimately from Proto-Indo-European *speḱ- ‘to see, to look, to observe’.
- Proto-Indo-Europeanc. 4500–2500 BCE*speḱ-1‘to see, to look, to observe’reconstructed
- Proto-Indo-Europeanc. 4500–2500 BCE*spéḱyeti1‘to be looking at, to keep looking at’reconstructed
- Proto-Hellenicc. 2200–1600 BCE*sképt͏̌omai1‘to look at’reconstructed
- Ancient Greekc. 800–300 BCEσκέπτομαι1sképtomai‘to look at, examine’
- Ancient Greekc. 800–300 BCEσκοπός1skopós‘watcher, lookout’
- Ancient Greekc. 800–300 BCEσκοπέω1skopéō‘to look, look at, behold’
- Englishtodaygonioscope1
attested reconstructed ? uncertain or disputed deepest recorded ancestor
- 1 Wiktionary, English gonioscope
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*speḱ-Wiktionary, English gonioscope‘to see, to look, to observe’reconstructed
- Proto-Indo-Europeanc. 4500–2500 BCE*spéḱyetiWiktionary, English gonioscope‘to be looking at, to keep looking at’reconstructed
- Proto-Hellenicc. 2200–1600 BCE*sképt͏̌omaiWiktionary, English gonioscope‘to look at’reconstructed
- Ancient Greekc. 800–300 BCEσκέπτομαιWiktionary, English gonioscopesképtomai‘to look at, examine’
- Ancient Greekc. 800–300 BCEσκοπόςWiktionary, English gonioscopeskopós‘watcher, lookout’
- Ancient Greekc. 800–300 BCEσκοπέωWiktionary, English gonioscopeskopéō‘to look, look at, behold’
- EnglishtodaygonioscopeWiktionary, English gonioscope
Linked words
through Proto-Indo-European *speḱ- ‘to see, to look, to observe’
spy, suspicion, espionage, skeptic, especial, inconspicuous, espy, 112 more
through Proto-Indo-European *spéḱyeti ‘to be looking at, to keep looking at’
special, despite, specific, respect, species, perspective, aspect, spectrum, inspector, spite, spice, spectacular, inspection, specify, expectation, speculation, specimen, inspect, spectacle, speculative, spectator, speculate, retrospective, conspicuous, retrospect, specter, expectant, circumspect, speculator, specious, specular, 109 more
through Ancient Greek σκέπτομαι ‘to look at, examine’
through Ancient Greek σκοπός ‘watcher, lookout’
through Ancient Greek σκοπέω ‘to look, look at, behold’
microscope, kaleidoscope, spectroscopic, macroscopic, endoscopic, gyroscope, 83 more
Today it means
noun any of various instruments allowing a clinician to view the irideocorneal angle through a mirror or prism
Sources
Sources: Wiktionary, “gonioscope”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / Proto-Indo-European *speḱ- / gonioscope