Share this entry

precipitin Syllabification: pre·cip·i·tin
Pronunciation: /prēˈsipədən/

Definition of precipitin in English:


An antibody that produces a visible precipitate when it reacts with its antigen.
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.

Definition of precipitin in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day doofus
Pronunciation: ˈduːfʌs
a stupid person