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Definition of Retinoid

Retinoid: 1. Vitamin A (retinol) or a naturally occurring or synthetic substance chemically related to it. (Retinoid literally means "like retinol.")
2. In ophthalmology, resembling the retina.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=25378
Last Editorial Review: 6/14/2012

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