retinal
2[ret-n-al, -awl]
- an orange pigment, C20H28O, that is the active component of rhodopsin and is liberated upon the absorption of light in the vision cycle; vitamin A aldehyde.
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Also ret·i·nene [ret-n-een] /ˈrɛt nˌin/.
Origin of retinal
2Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
retinene
retinal (ˈrɛtɪnəl)
- the aldehyde form of the polyene retinol (vitamin A) that associates with the protein opsin to form the visual purple pigment rhodopsin
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Word Origin for retinene
C20: from retina + -ene
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for retinene
retinal
Online Etymology Dictionary, © 2010 Douglas Harper
retinene
(rĕt′n-ēn′)- Either of two yellow to red retinal pigments, formed by oxidation of vitamin A alcohols.
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retinal
(rĕt′n-ăl′, -ôl′)- retinaldehyde
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The American Heritage® Stedman's Medical Dictionary
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