retina
pronunciation
How to pronounce retina in British English:
UK [ˈretɪnə]
How to pronounce retina in American English:
US [ˈretənə]
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- Noun:
- the light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve
Word Origin
- retina (n.)
- late 14c., from Medieval Latin retina "the retina," probably from Vulgar Latin (tunica) *retina, literally "net-like tunic," on resemblance to the network of blood vessels at the back of the eye, and ultimately from Latin rete "net" (see reticulate (adj.)). The Vulgar Latin phrase might be Gerard of Cremona's 12c. translation of Arabic (tabaqa) shabakiyyah "netlike (layer)," itself probably a translation of Greek amphiblestroeides (khiton).
Example
- 1. It involves injecting the gene into the retina .
- 2. But the human retina does not ordinarily produce those molecules .
- 3. Flying corks can cause retina detachment , double vision , and blindness .
- 4. And each pupil sends incoming visual info to a different side of the fish 's retina .
- 5. First , mr samaras was rushed to hospital for surgery to treat a detached retina .