/ Dictionary / Index A allotype: Meaning and Definition of Find definitions for: al•lo•type Pronunciation: (al'u-tīp"), [key] — n. a type specimen of the sex opposite to that of the holotype. 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. allottee all-out Related Content Daily Word Quiz: alacrity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language