— allotypic /al'euh tip"ik/ , adj. — allotypically , adv. — allotypy /al"euh tuy'pee/ , n.
/al"euh tuyp'/ , n.
1. Biol. a type specimen of the sex opposite to that of the holotype.
2. Immunol. an antibody of a given class having certain molecular sites shared by only some members of a species and therefore acting as an antigen to other members of the same species.
[ 1915-20; ALLO- + TYPE; in immunological sense, prob. back formation from allotypy allotypie, coined in 1956 ]