ret·i·nal
ˈre-tə-ˌnal 
-ˌnȯl
: a yellowish to orange aldehyde C20H28O derived from vitamin A that in combination with proteins forms the visual pigments of the retinal rods and cones
Examples of retinal in a Sentence
Recent Examples on the Web
Rana Wehbe Watson, Forbes, 29 Nov. 2023
Astrocytes are shown in yellow, contractile proteins in red, and retinal vasculature in green.
—Jennifer Ouellette, Ars Technica, 17 Oct. 2023
See all Example Sentences for retinal 
Adjective
That included ophthalmic lasers and a pediatric retinal camera used in the treatment of optic nerve disorders and eye tumors in children, according to Mutmainah, head of the eye health center at RSCM Kirana, who like many Indonesians goes by one name.
—Rana Wehbe Watson, Forbes, 29 Nov. 2023
Astrocytes are shown in yellow, contractile proteins in red, and retinal vasculature in green.
—Jennifer Ouellette, Ars Technica, 17 Oct. 2023
See all Example Sentences for retinal
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“Retinal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/retinal. Accessed 29 May. 2024.
Copy CitationMedical Definition
retinal
1 of 2 adjective
ret·i·nal
ˈret-ᵊn-əl, ˈret-nəl
: of, relating to, involving, or being a retina
a retinal examination
retinal rods
retinal
2 of 2 noun
ret·i·nal
ˈret-ᵊn-ˌal
-ˌȯl
-ˌȯl
: a yellowish to orange aldehyde C20H28O derived from vitamin A that in combination with proteins forms the visual pigments of the retinal rods and cones
called also retinene, retinene1, vitamin A aldehyde
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