verb (used with or without object), ti·trat·ed, ti·trat·ing. Chemistry.
  1. to ascertain the quantity of a given constituent by adding a liquid reagent of known strength and measuring the volume necessary to convert the constituent to another form.

Origin of titrate

First recorded in 1860–65; tit(e)r + -ate1
Related formsti·tra·ta·ble, ti·tra·ble [tahy-truh-buh l] /ˈtaɪ trə bəl/, adjectiveti·tra·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for titrate

Historical Examples of titrate

  • After letting stand 30 minutes, filter and then titrate 50 cc.

  • Titrate the distillate with N/10 alkali, using phenolphthalein as an indicator.

    All About Coffee

    William H. Ukers

  • Add phenolphthalein to the filtrate and titrate with N/10 acid and calculate the per cent.

    Soap-Making Manual

    E. G. Thomssen

  • Dissolve the residue in neutral alcohol and titrate with standard alkali using phenolphthalein as an indicator.

    Soap-Making Manual

    E. G. Thomssen

  • Dissolve the ash in distilled water and titrate total alkalinity, using as indicator methyl orange cold or litmus boiling.

    Soap-Making Manual

    E. G. Thomssen

British Dictionary definitions for titrate


  1. (tr) to measure the volume or concentration of (a solution) by titration
Derived Formstitratable, adjective

Word Origin for titrate

C19: from French titrer; see titre
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 titrate

1870, from French titrer, from titre "title, qualification" (see titration).

Online Etymology Dictionary, © 2010 Douglas Harper

titrate in Medicine


  1. To determine the concentration of a solution by titration or perform the operation of titration.
Related formstitrat′a•ble adj.titra′tor n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.