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Biochemistry. any of a group of substances related to vitamin A and functioning like vitamin A in the body.
resembling the retina.

retinoid ret·i·noid (rět’n-oid’)
Any of a class of keratolytic drugs derived from retinoic acid and used in the treatment of severe acne and psoriasis.


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  • Retinol

    noun 1. vitamin A. 2. Chemistry. a yellowish oil, C 3 2 H 1 6 , obtained by the distillation of resin, used as a solvent and as an antiseptic. noun 1. another name for vitamin A2 2. another name for rosin oil retinol ret·i·nol (rět’n-ôl’, -ōl’) n. See vitamin A. retinol (rět’n-ôl’) See vitamin […]

  • Retinol dehydrogenase

    retinol dehydrogenase n. An enzyme that catalyzes interconversion of retinaldehyde and retinol.

  • Retinopapillitis

    retinopapillitis ret·i·no·pap·il·li·tis (rět’n-ō-pāp’ə-lī’tĭs) n. See papilloretinitis.

  • Retinopathy

    noun, Ophthalmology. 1. any diseased condition of the retina, especially one that is noninflammatory. noun 1. any of various noninflammatory diseases of the retina which may have serious effects on vision retinopathy ret·i·nop·a·thy (rět’n-ŏp’ə-thē) n. A noninflammatory degenerative disease of the retina.

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