karyotypeEnglishOxford New American Dictionarykaryotype /ˈkerēōˌtīp, ˈkɛrioʊˌtaɪp / ▸ noun Biology & Medicine the number and visual appearance of the chromosomes in the cell nuclei of an organism or species. – DERIVATIVES karyotypic /ˌkarēəˈtipik/ adjective