衍声复词 yǎnshēngfùcí phonetic compound word Origin Definitions Defs Strokes Stroke Words Sentences Sents 衍 yǎn noun to spread out (bound form) to spread out; to develop; to multiply or proliferate, as in 繁衍 fányǎn声 聲 shēng noun sound sound; voice; noise; something that can be heard复词 複詞 fùcí compound word A word made of two or more characters that represents a single meaning; polysyllabic word.