Pronunciation: (al'u-tīp"), [key]
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.