poikilitic Syllabification: (poi·ki·lit·ic)Pronunciation: /ˌpoikəˈlitik/Definition of poikilitic adjective Geology relating to or denoting the texture of an igneous rock in which small crystals of one mineral occur within crystals of another. Origin: mid 19th century: from Greek poikilos 'variegated' + -ite1 + -icpoikilitic in other Oxford dictionaries Definition of poikilitic in the British & World English dictionary