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
Anuradha Varanasi, Forbes, 4 Nov. 2024
Early on, players must get a retinal scan from a sleazy senator attending Bill Clinton’s gala.
—Cade Onder, Rolling Stone, 1 Nov. 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
See all Example Sentences for retinal 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Adjective
Researchers say that happens when bright light enters the inner surface of the retina where neurons called retinal ganglion cells are located.
—Anuradha Varanasi, Forbes, 4 Nov. 2024
Early on, players must get a retinal scan from a sleazy senator attending Bill Clinton’s gala.
—Cade Onder, Rolling Stone, 1 Nov. 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 22 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share