retinal

[ ret-n-al, -awl ]

/ ˈrɛt nˌæl, -ˌɔl /

noun Biochemistry.

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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Question 1 of 10

Which of the options below is the best punctuation for the sentence? It__s your turn to pick the movie __ but your sister gets to pick the board game we _ re going to play.

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Also ret·i·nene

[ret-n-een] /ˈrɛt nˌin/.

Origin of retinal

First recorded in 1940–45; retin(a) + -al³

Words nearby retinal

retinaculum of fibular muscles, retinaculum of flexor muscles, retinaculum of peroneal muscles, retinaculum of skin, retinaculum tendinum, retinal, retinal adaptation, retinal cone, retinal detachment, retinal isomerase, retinal rivalry

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for retinene

retinene

retinal (ˈrɛtɪnəl)

/ (ˈrɛtɪˌniːn) /

noun

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

Word Origin for retinene

C20: from retina + -ene

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

Medical definitions for retinene (1 of 2)

retinene

[ rĕt′n-ēn′ ]

n.

Either of two yellow to red retinal pigments, formed by oxidation of vitamin A alcohols.

Medical definitions for retinene (2 of 2)

retinal

[ rĕt′n-ăl′, -ôl′ ]

n.

retinaldehyde