retinal

adjective
ret·​i·​nal | \ ˈre-tə-nəl How to pronounce retinal (audio) , 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 How to pronounce retinal (audio) , -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 Read on for our favorite gentle-yet-effective retinal serum, a great leave-in conditioner for 4C hair, and more. ELLE, 15 Apr. 2022 Among mammals, only some primates have three types of retinal cones. Max G. Levy, Wired, 7 Feb. 2022 Some notable examples of biometric data include fingerprints, retinal scans, facial recognition, typing cadence, voice patterns, signatures, DNA scans and behavioral patterns such as web search histories. Jonathan Herpy, Forbes, 5 Apr. 2021 The active ingredient, pilocarpine, is one of a class of drugs called miotics, which pose some risk of retinal detachment (although no one had that problem in the clinical trials, says Dr. Chu). Steven Odierna As Told To Stephanie Dolgoff, Good Housekeeping, 9 Mar. 2022 Prosecutors say the infant sustained a brain bleed, retinal hemorrhaging, and fractures to both his legs that required the child to be hospitalized at Stony Brook Hospital. Jeff Truesdell, PEOPLE.com, 28 Feb. 2022 In other words: An epidemic of myopia could lead to an epidemic of retinal detachment, glaucoma, and the early development of cataracts. Fortune, 12 Jan. 2022 Guthrie underwent a number of laser procedures, and then surgery to repair retinal detachment in December 2019, according to Today. Carolyn L. Todd, SELF, 21 Apr. 2021 However, some retinal diseases interrupt this process by damaging those cells. Joshua Hawkins, BGR, 4 Jan. 2022 Recent 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, 8 Oct. 2017 See More

These 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.

First Known Use of retinal

Adjective

1798, in the meaning defined above

Noun

1944, in the meaning defined above

History and Etymology for retinal

Noun

retin- + -al entry 3

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Time Traveler for retinal

Time Traveler

The first known use of retinal was in 1798

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Dictionary Entries Near retinal

retinaculum

retinal

retinal detachment

See More Nearby Entries 

Statistics for retinal

Last Updated

29 Apr 2022

Cite this Entry

“Retinal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/retinal. Accessed 22 May. 2022.

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More Definitions for retinal

retinal

adjective
ret·​i·​nal | \ ˈret-ᵊn-əl, ˈret-nəl How to pronounce retinal (audio) \

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 How to pronounce retinal (audio) , -ˌȯl How to pronounce retinal (audio) \

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

More from Merriam-Webster on retinal

Britannica.com: Encyclopedia article about retinal

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