RETINAL
\ɹˈɛtɪnə͡l], \ɹˈɛtɪnəl], \ɹ_ˈɛ_t_ɪ_n_əl]\
Definitions of RETINAL
- 2006 - WordNet 3.0
- 2011 - English Dictionary Database
- 2010 - New Age Dictionary Database
- 1913 - Webster's Revised Unabridged Dictionary
- 2010 - Medical Dictionary Database
- 1920 - A practical medical dictionary.
- 1846 - Medical lexicon: a dictionary of medical science
- 1898 - American pocket medical dictionary
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By Princeton University
By DataStellar Co., Ltd
-
A carotenoid constituent of visual pigments. It is the oxidized form of retinol which functions as the active component of the visual cycle. It is bound to the protein opsin forming the complex rhodopsin. When stimulated by visible light, the retinal component of the rhodopsin complex undergoes isomerization at the 11-position of the double bond to the cis-form; this is reversed in "dark" reactions to return to the native trans-configuration.
By DataStellar Co., Ltd
By Robley Dunglison
Word of the day
Hymenolepis
- A genus of small tapeworms birds and mammals. A genus of Cestoda or tapeworms. A cestode worm order Cyclophyllideae, family Hymenolepinidae, genus Hymenolepis. includes several genera, such as H. Diminuta, occasionally infesting children, and Nana, or the dwarf tapeworm of children. Flavopuncta. See Taenia flavopuncta, under tenia.