— idiotypic /id'ee euh tip"ik/ , adj. — idiotypy /id"ee euh tuy'pee/ , n.
/id"ee euh tuyp'/ , n. Immunol.
the molecular arrangement of amino acids unique to the antigen-binding site of a particular antibody.
[ 1969; back formation from idiotypic or idiotypy, on the model of allotypy; see IDIO-, ALLOTYPE ]