precipitin

[ pri-sip-i-tin ]

/ prɪˈsɪp ɪ tɪn /

noun Immunology.

an antibody that reacts with its specific antigen to form an insoluble precipitate.

Nearby words

Origin of precipitin

First recorded in 1895–1900; precipit(ate) + -in²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for precipitin

Graphs of precipitin reactions illustrating serological relationships.
Myology and Serology of the Avian Family Fringillidae|William B. Stallcup
The antiserum used for the precipitin reaction was obtained by treating a rabbit with human blood serum.
The Organism as a Whole|Jacques Loeb
The precipitin reaction is the most successful of the serological techniques thus far devised for systematic comparisons.
Myology and Serology of the Avian Family Fringillidae|William B. Stallcup
Some precipitin tests and preliminary remarks on the systematic relationships of four South American families of frogs.
The Genera of Phyllomedusine Frogs (Anura Hylidae)|William E. Duellman

Now all these specific reactions, the precipitin reaction as well as the anaphylactic reaction, can be called forth by proteins.
The Organism as a Whole|Jacques Loeb

British Dictionary definitions for precipitin

precipitin

/ (prɪˈsɪpɪtɪn) /

noun

immunol an antibody that causes precipitation when mixed with its specific antigen

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for precipitin

precipitin

[ prĭ-sĭp′ĭ-tĭn ]

n.

An antibody that under suitable conditions combines with and causes a specific soluble antigen to precipitate.