retinal
adjective
ret·i·nal
| \ ˈre-tə-nəl
, ˈret-nəl\
, ˈret-nəl\
Definition of retinal
(Entry 1 of 2)
: of, relating to, involving, or being a retina
retinal
noun
ret·i·nal
| \ ˈre-tə-ˌnal
, -ˌnȯl\
, -ˌnȯl\
Definition of retinal (Entry 2 of 2)
: 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: Adjective
Retinol, retinal, and retinoic acid are all types of retinoids, which are vitamin A derivatives. — Tiffany Dodson, SELF, "7 Over-the-Counter Retinol Serums and Creams Dermatologists Highly Recommend," 30 May 2019 In April, the institute began testing one that involves transplanting retinal cells made from stem cells below the retina in the hopes of replacing dysfunctional cells and tissues. — Jonathan Saltzman, BostonGlobe.com, "Stem-cell biotech seeing strong growth," 2 July 2019 While intubated and non-responsive, JD was diagnosed with multiple skull fractures, cerebral hemorrhaging, extensive retinal hemorrhaging. — Bruce Vielmetti, Milwaukee Journal Sentinel, "Milwaukee man charged in beating death of infant boy while the child was in his mother's arms," 10 June 2019 Throughout my range, there’s Vitamin A in many different forms, from retinal palmitate to retinol. — April Long, Town & Country, "Meghan Markle's Facialist Reveals What It Was Like to Treat Her Right Before the Royal Wedding," 15 May 2019 Natural retinoids include retinol, which is converted into retinal (retinaldehyde), which is later converted into retinoic acid. — Sarah Jacoby, SELF, "Can People With Sensitive Skin Be in the Retinol Club, Too?," 30 Apr. 2019 So far, studies show NACA can slow retinal degeneration in rodents. — Caren Chesler, Popular Mechanics, "A Vision Quest," 6 Mar. 2019 Due to coexisting ocular conditions (corneal or retinal), not all patents may be good candidates for these lenses. — WSJ, "See What Cataract Surgery May Also Involve," 28 Nov. 2018 However, a retinal migraine usually only affects one eye while ocular migraines typically impact both. — Korin Miller, SELF, "Ocular Migraines Shouldn’t Exist, But They Do, So Here’s What to Know," 7 June 2018Recent Examples on the Web: Noun
Using gentle microdermabrasion scrubs, retinals, and other exfoliation-boosting products can help prevent them, as does avoiding using heavy creams and makeup. — Amanda Chan, Teen Vogue, "Milia: What They Are, and How to Remove Them," 8 Oct. 2017These example sentences are selected automatically from various online news sources to reflect current usage of the word 'retinal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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More Definitions for retinal
retinal
adjective
ret·i·nal
| \ ˈret-ᵊn-əl, ˈret-nəl
\
\
Medical Definition of retinal
(Entry 1 of 2)
: of, relating to, involving, or being a retina
a retinal examination retinal rods
retinal
noun
ret·i·nal
| \ ˈret-ᵊn-ˌal
, -ˌȯl
\
, -ˌȯl
\
Medical Definition of retinal (Entry 2 of 2)
: 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