小序 xiǎoxù preface Origin Definitions Defs Strokes Stroke Words Sentences Sents 小 xiǎo adjective small small; tiny; few; minor; in area, volume, quantity, or power, being less than average or less than the object of comparison; opposite of 大 dà序 xù noun preface The preface or foreword to a book; also refers to introductory sections of a performance or event, such as a prologue.