[floo r-i-deyt, flawr-, flohr-]

Origin of fluoridate

First recorded in 1945–50; back formation from fluoridation
Related formsde·fluor·i·date, verb (used with object), de·fluor·i·dat·ed, de·fluor·i·dat·ing.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for fluoridate

Contemporary Examples of fluoridate

British Dictionary definitions for fluoridate


  1. to subject (water) to fluoridation
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 fluoridate

1949, back-formation from fluoridation. Related: Fluoridated; fluoridating.

Online Etymology Dictionary, © 2010 Douglas Harper

fluoridate in Science


  1. To add fluorine or a fluoride to something, especially to drinking water in order to prevent tooth decay.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.