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
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Quartz Bot, Quartz, 12 Nov. 2024
Nikki was found to have a head injury that had caused bleeding, brain swelling and retinal hemorrhaging.
—Alexis Simmerman, Austin American-Statesman, 9 Oct. 2024
Jacqueline Kilikita, refinery29.com, 27 June 2024
Follow it up with a moisturizer or night cream to hydrate the skin and lock in the retinal.
—Madison Yauger, Peoplemag, 15 Mar. 2023
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Adjective
The filing also details the company's acquisition of Opus Genetics, Inc., expanding its pipeline with gene therapy programs targeting retinal diseases.
—Quartz Bot, Quartz, 12 Nov. 2024
Nikki was found to have a head injury that had caused bleeding, brain swelling and retinal hemorrhaging.
—Alexis Simmerman, Austin American-Statesman, 9 Oct. 2024
Noun
Both experts agree that retinoids — such as retinol or the more potent retinal — may make the surface of the skin appear smoother over time as they are known to stimulate collagen production in the top layers.
—Jacqueline Kilikita, refinery29.com, 27 June 2024
Follow it up with a moisturizer or night cream to hydrate the skin and lock in the retinal.
—Madison Yauger, Peoplemag, 15 Mar. 2023
See all Example Sentences for retinal
Dictionary Entries Near retinal
Cite this Entry
“Retinal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/retinal. Accessed 28 Nov. 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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