苛性 Traditional form: 苛性 Pinyin (reading): kēxìng Definitions: caustic (chemistry) Characters: 苛 - severe, harsh; rigorous, exacting 性 - sex, nature, character; suffix converting a verb to an adjective Traditional characters: 苛 - severe, harsh; rigorous, exacting 性 - sex, nature, character; suffix converting a verb to an adjective