臨りん界かい前ぜん核かく実じっ験けんMeaningsNoun1. subcritical nuclear experimentKanji used臨face something界realm前in front of核nucleus実real験verificationComposed of臨りん界かいboundary; (nuclear) criticality; critical (mass, pressure, temperature, state, point, etc.)Noun前ぜんlast (i.e. immediately preceding); previous; ex-; former; pre- (e.g. premodern); beforePrefix核かく実じっ験けんnuclear (bomb) testNoun