さんせい 酸性 Common word JLPT N2 LinksSentence search for 酸性Sentence search for さんせいKanji details for 酸 and 性Edit in JMdict Noun1. acidityChemistry, Antonym: 塩基性Noun which may take the genitive case particle 'no'2. acidicChemistry, Antonym: 塩基性 Discussions Log in to talk about this word.