EnglishEdit

Etymology 1Edit

From Ancient Greek ῥητίνη (rhētínē, resin) +‎ -oid.

AdjectiveEdit

retinoid (comparative more retinoid, superlative most retinoid)

  1. (rare, obsolete) Pertaining to or resembling a resin. [19th c.]

Etymology 2Edit

 
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From retin(ol) +‎ -oid.

NounEdit

retinoid (plural retinoids)

  1. (biochemistry) Any of a class of compounds whose structure or effects on the body resemble retinol (vitamin A). [from 20th c.]
    • 2018, Ian Sample, The Guardian, 28 March:
      Tests on the two retinoids, combined with computer modelling, showed that the compounds killed not only normal MRSA cells, but dormant, or “persister”, cells too.

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