合元音 héyuányīn high vowel Definitions Defs Origin Strokes Stroke Words Sentences Sents 合 hé verbadjective to fit to conform to; to suit; to be in accord with; to match元音 yuányīn vowel A speech sound produced by the vocal cords vibrating while the air flows through the mouth and throat without being blocked; also called 母音 mǔyīn.