I. (ˌ)prō-ˈnü-klē-ər, -ˈnyü-, ÷-kyə-lər adjective
Etymology: pronucleus
Date: circa 1889
: of, relating to, or resembling a pronucleus
II. adjective
Etymology: pro- (II) + nuclear
Date: 1971
: advocating the use of nuclear-powered generating stations