Definition of titre in English:


Line breaks: titre
Pronunciation: /ˈtʌɪtə
, ˈtiːtə
(US titer)


  • 1The concentration of a solution as determined by titration.
    More example sentences
    • Dialysis of the DNA resulted in acceptable titres.
    • The plate is incubated at 37° for 16-36 hr, and the titer of the colony-forming units is divided by the titer of the microscopic count to determine the viability.
    • Aliquots were withdrawn at the indicated times, the viable titer was determined, and the percentage of survivors was calculated.
  • 1.1The minimum volume of a solution needed to reach the end point in a titration.
  • 1.2 Medicine The concentration of an antibody, as determined by finding the highest dilution at which it is still able to cause agglutination of the antigen.
    More example sentences
    • The antibody response was termed as group specific, species specific or cross reactive depending on the comparative antibody titres obtained against different antigen pools.
    • Patients in Stages III and IV showed a decline in the antiGDlb antibody titers in relation to neurological recovery following PE.
    • Influenza vaccination has produced substantial antibody titers against influenza in vaccinated HIV-infected persons who have minimal symptoms related to acquired immunodeficiency syndrome and high CD4 cell counts.


mid 19th century: from French, from titrer (see titrate).

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