Definition of precipitin in English:


Line breaks: pre|cipi¦tin
Pronunciation: /prɪˈsɪpɪtɪn


An antibody that produces a visible precipitate when it reacts with its antigen: [as modifier]: a precipitin test
More example sentences
  • Serum agglutinins, precipitins, and complement-fixing antibodies can also be used to establish a diagnosis.
  • His laboratory was the first to emphasize the importance of precipitins to various peptide and polysaccharide antigens of Aspergillus fimigatus.
  • A negative serologic assay for precipitins does not rule out disease, as many factors can decrease the sensitivity of the test.


early 20th century: from the verb precipitate + -in1.

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