Dictionary
1retinal
adjective ret·i·nal \ˈre-tə-nəl, ˈret-nəl\
Definition of RETINAL
: of, relating to, involving, or being a retina
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First Known Use of RETINAL
1838
2retinal
noun ret·i·nal \ˈre-tə-ˌnal, -ˌnȯl\
Definition of RETINAL
: 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
Origin of RETINAL
retin- + 3-al
First Known Use: 1944
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