ti·​ter | \ ˈtī-tər How to pronounce titer (audio) \

Definition of titer

: the strength of a solution or the concentration of a substance in solution as determined by titration

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Examples of titer in a Sentence

Recent Examples on the Web

In law, a rabies titer is not recognized as a valid index of protection. Dr. Marty Becker And Kim Campbell Thornton, sacbee, "Rabies can be matter of life or death for pets," 11 Aug. 2017 When tested, their titers – a measurement of antibodies – are lower, leaving them five times more likely than women to have an oral infection. The Washington Post, The Denver Post, "Why doctors say kids need HPV vaccinations," 2 Apr. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'titer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of titer

1868, in the meaning defined above

History and Etymology for titer

French titre title, proportion of gold or silver in a coin, from Old French title inscription, title

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Dictionary Entries near titer



tit drill




tit for tat

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Time Traveler for titer

The first known use of titer was in 1868

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More Definitions for titer


ti·​ter | \ ˈtīt-ər How to pronounce titer (audio) \
variants: or chiefly British titre \ ˈtī-​tər also ˈtē-​ \

Medical Definition of titer

1a : the strength of a solution or the concentration of a substance in solution as determined by titration
b : the dilution of a serum containing a specific antibody at which the solution just retains a specific activity (as neutralizing or precipitating an antigen) which it loses at any greater dilution a test for toxoplasmosis antibodies yielded a titer of 1:1024
2 : the solidifying point of the fatty acids liberated from a fat that is determined by melting the acids in a tube and noting the temperature at which they solidify again on cooling

Other Words from titer

titered \ -​ərd How to pronounce titered (audio) \ adjective

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Comments on titer

What made you want to look up titer? Please tell us where you read or heard it (including the quote, if possible).


a topic to which one constantly reverts

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