monozygotic Syllabification: (mon·o·zy·got·ic)Pronunciation: /ˌmänōˌzīˈgätik/ (also monozygous /ˌmänəˈzīgəs/)Definition of monozygotic adjective (of twins) derived from a single ovum, and so identical. Derivatives monozygosityPronunciation: /-ˈgäsitē/ noun Origin: early 20th century: from mono- 'single' + zygote + -icmonozygotic in other Oxford dictionaries Definition of monozygotic in the British & World English dictionary