中ちゅう核かく事じ業ぎょうMeaningsNoun1. core businessKanji used中in核nucleus事occurence業businessComposed of中ちゅう核かくkernel; core; nucleus; center; centreNoun事じ業ぎょうbusiness; enterprise; venture; (commercial) activity; (business) operation; industry; (social) project; undertaking; work; activity; …Noun