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See more synonyms for Prozac on Thesaurus.com
Pharmacology, Trademark.
  1. a brand of fluoxetine hydrochloride.
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Origin of Prozac

First recorded in 1988
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for prozac


  1. trademark fluoxetine; a drug that prolongs the action of serotonin in the brain; used as an antidepressant
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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

Word Origin and History for prozac



1985, proprietary name for fluoxetine hydrochloride, developed early 1970s by Lilly Industries.

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Online Etymology Dictionary, © 2010 Douglas Harper

prozac in Medicine


  1. A trademark for fluoxetine hydrochloride.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.