() — (bound form) order; sequence; (bound form) preface; introductory text

Definition

序 (xù) is a bound morpheme meaning 'order/sequence' (as in 顺序) or 'preface/introductory text' (as in 序言). It almost never stands alone — use 顺序 for the everyday noun 'sequence', and 序言 for 'preface'.

bound form
ordersequenceprefaceintroductory text

Examples

  • Tā qǐng le yí wèi zhù míng zuò jiā wèi tā de shū xiě yì piān xù.
    He invited a famous writer to write a preface for his book.
  • Qǐng dà jiā àn zhào nián líng shùn xù zhàn hǎo.
    Please stand in order of age.
  • Zhè xiē cí shì àn pīn yīn shùn xù pái liè de.
    These words are arranged in pinyin order.

Origin

Sound + meaning
六书liùshū
形声xíngshēng

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
Sound part声符shēngfú
The sound has drifted apartThe sound part was a clue two thousand years ago — it often still helps, but not always.

序 combines 广 and 予; 予 gives the sound, while 广 marks the meaning.

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