/ Dictionary / Index H histocompatibility: Meaning and Definition of Find definitions for: his•to•com•pat•i•bil•i•ty Pronunciation: (his"tō-kum-pat"u-bil'i-tē), [key] — n. Immunol. the condition of having antigenic similarities such that cells or tissues transplanted from one (the donor) to another (the recipient) are not rejected. Cf. major histocompatibility complex. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: histocompatibility (Thesaurus) histochemistry histocompatibility antigen Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language