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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

Any of a group of substances related to vitamin A and functioning like vitamin A in the body;

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Usage examples (32)
  • The risks arise because alitretinoin is a retinoid.
  • Tazorac is a topical retinoid, which means it is a vitamin A derivative.
  • And retinol is converted to a small degree to the pharmaceutical retinoid in the skin.
  • Other topical treatments combine hydroquinone with a retinoid and a light anti-inflammatory steroid.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.