precipitin[prē sip′ə tin, pri-]
an antibody produced in the blood of an animal injected with a soluble antigen: when the antigen is added to blood serum from such an animal, a precipitate forms
Origin of precipitinprecipit(ate) + -in
An antibody that reacts with a specific soluble antigen to produce a precipitate.
Origin of precipitinprecipit(ate) + –in.