Definition

A type of chemical compound that is related to vitamin A, often used in skincare and medicine.

Example

Retinoids are commonly used to treat acne and improve skin texture.

Conversation

Have you ever tried a skincare product with retinoid in it?

Yeah, I used one last year and it really helped with my skin texture.

I’ve heard they’re great for reducing wrinkles too.

Absolutely! They can make a big difference over time.

Synonyms & Antonyms

Root Explanation

Retinoid is formed from "retina" (from Latin *retina*, meaning net or network, referring to the light-sensitive layer at the back of the eye) and the suffix "-oid" (meaning resembling or like). The term retinoid refers to compounds that are similar to vitamin A and have effects on the skin and vision, akin to the functions of the retina.

Memory Tip

Think of the 'retina' as the 'network' in your eye that helps you see, and remember that 'retinoid' refers to substances that are 'like' or 'resembling' vitamin A, which is important for vision.

Visually Confused Words