isoantibody isoamylidene • isoantigen · · · Info · Definitions · Synonyms · Characters · · isoantibody · · Text Latin · · Script 11 · · Length 5 · · Syllables Definitions · · · (noun) an antibody that occurs naturally against foreign tissues from a person of the same species. Synonyms: alloantibody. · · Noun Definition 1 Synonyms · · · alloantibody · · Synonym 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079