nucleateDefinition of nucleate adjective Pronunciation: /ˈnjuːklɪət/ chiefly Biology having a nucleus. verb Pronunciation: /ˈnjuːklɪeɪt/ [no object] (usually as adjective nucleated) form a nucleus: a nucleated fetal cell form around a central area:a nucleated villageDerivatives nucleationPronunciation: /-ˈeɪʃ(ə)n/ noun nucleate in other Oxford dictionaries Definition of nucleate in the US English dictionary