retinoid

[ret-n-oid]

noun

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

adjective

1. resembling the retina.

Word History and Origins

Origin of retinoid¹

First recorded in 1975–80; retin(ol) + -oid

Example Sentences

“If you’re using a topical retinoid or topical vitamin C, they’re much less expensive,” she says.

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One result of retinol biology remaining obscure for so long is that retinoid and vitamin A applications have long produced confusing results.

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Thalidomide, a well-known teratogen in humans, and retinoid derivatives -- used in treatments against leukaemia, psoriasis, and acne -- are known to cause severe heart defects in the fetus.

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“What I tell patients is that the retinoid needs to be the star of the show. She’s a bit of a diva, and you really have to let her have her time to set the stage just the way she wants it before allowing the supporting cast onstage.”

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“So, part of this is the fault of dermatologists. We need to give people the right information about how to safely and tolerably introduce a retinoid.”

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