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单词 retinal
释义

WordReference Random House Unabridged Dictionary of American English © 2024
ret•i•nal1  (retn əl),USA pronunciation adj. 
  1. Ophthalmology, Anatomyof or pertaining to the retina of the eye.
  • retin(a) + -al1 1830–40

ret•i•nal2  (retn al′, -ôl′),USA pronunciation n. [Biochem.]
  1. Biochemistryan 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.
Also, ret•i•nene (retn ēn′).USA pronunciation 
  • retin(a) + -al3 1940–45

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