retinene

British

/ ˈrɛtɪˌniːn /

noun

the aldehyde form of the polyene retinol (vitamin A) that associates with the protein opsin to form the visual purple pigment rhodopsin

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of retinene

C20: from _retina + _-ene

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

retinene

Then the retinene combines with the opsin to form bright red rhodopsin.

From Time Magazine Archive

When this mixture is placed in the dark, the enzymes convert the vitamin A to retinene, a yellow pigment.

From Time Magazine Archive

The retinene reverts to vitamin A. This is just what happens when light shines into a dark-adapted eye: the rhodopsin in the rods is suddenly decomposed.

From Time Magazine Archive

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023