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. From Healthy Resources Mucus Relief: Find the Right SolutionBMI Calculator: What Your Numbers MeanWhere Are the Germs Hiding? Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew
