そ 素 Common word LinksSentence search for 素Sentence search for そKanji details for 素Edit in JMdict Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no', Noun1. plain, white silkNa-adjective (keiyodoshi), Noun, Noun which may take the genitive case particle 'no'2. primeMathematics, See also 互いに素 Discussions Log in to talk about this word.