isoagglutination Syllabification: (i·so·ag·glu·ti·na·tion)Pronunciation: /ˌīsōəglo͞otnˈāSHən/Definition of isoagglutination noun Physiology agglutination of sperms, erythrocytes, or other cells of an individual caused by a substance from another individual of the same species. isoagglutination in other Oxford dictionaries Definition of isoagglutination in the British & World English dictionary