titer
Americannoun
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the strength of a solution as determined by titration with a standard substance.
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the concentration of a substance in a given sample as determined by titration.
noun
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The concentration of a substance in solution or the strength of such a substance as determined by titration.
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The minimum volume of a solution needed to cause a particular result in titration.
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The concentration of antibodies present in the highest dilution of a serum sample at which visible clumps with an appropriate antigen are formed.
Etymology
Origin of titer
1830–40; < French titre title, qualification, fineness of alloyed gold or silver < Latin titulus title
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.
You might have heard about a titer test, which looks at the amount of antibodies in a person’s blood in order to confirm that they are immune.
From Slate ● Mar. 12, 2025
A: In our model, we give it at a very low titer and it causes a very significant, very itchy, full body rash.
From Science Magazine ● Oct. 26, 2023
“Omicron BA.2 is not neutralized with detectable titer by any of the therapeutic monoclonal antibodies, including sotrovimab,” researchers from the NYU Grossman School of Medicine said in the study, which hasn’t been peer-reviewed.
From Washington Times ● Feb. 21, 2022
In his post to The Page, Cherniak included his antibody titer ten days — and six months — after complete inoculation via his second dose of AstraZeneca.
From Salon ● Aug. 13, 2021
"That last checkup showed an antibody titer entirely too high for safety."
From Category Phoenix by Boyd Ellanby
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
