isotretinoin

American

[ahy-soh-tri-tin-oh-in, -oin] / ˌaɪ soʊ trɪˈtɪn oʊ ɪn, -ɔɪn /

noun

Pharmacology.

a yellowish-orange to orange crystalline powder, C 20 H 28 O 2 , used in the treatment of cystic acne.

isotretinoin British

/ ˌaɪsəʊtrəˈtɪnəʊɪn /

noun

a drug related to vitamin A, used to treat severe acne that has failed to respond to other treatment

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of isotretinoin

iso- + tretinoin a name for retinoic or Vitamin A acid, equivalent to t- (of uncertain derivation) + retino(ic acid) ( retin(ol) + -o- + -ic ) + -in ²

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The insects were less fond of mice that had consumed isotretinoin.

From Science Magazine • Jun. 30, 2022

Any dermatologist who treats severe acne should be familiar with isotretinoin.

From Seattle Times • Apr. 6, 2022

After a GP referral, she saw dermatologists at Harrogate District Hospital in late 2018 and isotretinoin, sold under the brand name Roaccutane, was recommended as a suitable treatment.

From BBC • Sep. 23, 2021

Dr Layton, a consultant dermatologist at Harrogate and District NHS Foundation Trust, said isotretinoin was found to be suitable for Annabel as she was "at risk of permanent scarring" from her acne.

From BBC • Sep. 23, 2021

The prescription drug isotretinoin significantly reduces the amount of sebum produced by the sebaceous glands, and is used to treat acne.

From Textbooks • Jan. 1, 2015

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023