Term: tretinoin
IPA: tɹəˈtɪn.əʊ.ɪn, tɹəˈtɪn.oʊ.ɪn

==English==
[[File:Tretinoin Structure.svg|thumb|350px|Chemical structure of '''tretinoin''']]
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===Etymology===
{{ety|en|:af|trans-<alt:tr(ans)->|retinoic acid<alt:retino(ic acid)>|-in|text=+|tree=1}}

===Pronunciation===
* {{IPA|en|/tɹəˈtɪn.əʊ.ɪn/|a=RP}}
* {{IPA|en|/tɹəˈtɪn.oʊ.ɪn/|a=GA}}

===Noun===
{{en-noun|-|s}}

# {{lb|en|carboxylic acid|pharmaceutical drug}} The all-[[trans]] [[isomer]] of [[retinoic acid]] that is applied to the [[skin]] to treat severe [[acne]] and reduce facial [