声速 (shēng sù) — speed of sound

Definition

noun
speed of sound

Examples

  • 声速340。
    shēng sù Zài kōng qì zhōng dà yuē shì měi miǎo 340 mǐ.
    The speed of sound in air is about 340 meters per second.
  • 声速。
    Chāo yīn sù fēi jī de sù dù chāo guò le shēng sù.
    Supersonic aircraft travel faster than the speed of sound.
  • 声速。
    Kē xué jiā yòng shí yàn cè liáng le shuǐ zhōng de shēng sù.
    Scientists measured the speed of sound in water through experiments.

Origin

Compound word
构词法gòucífǎ
偏正piānzhèngModifier + head

The first part narrows down the second: it says what kind of thing the head is.

速sùspeed

声 gives the domain of sound, and 速 gives speed.

Characters in this word

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

This origin belongs to the traditional form 聲; 声 is its simplified writing.

Meaning part形符xíngfú
耳耳ěrear
Sound part声符shēngfú
殸
殸qìng聲shēng
Same sound today

The traditional form 聲 pairs 耳 (ear) with 殸 as a sound part; the simplified 声 is a shorthand and does not show those original parts.

Open 声 →

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
辵辵chuò
Sound part声符shēngfú
束
束shù速sù
Close in sound todayThe sound part was a clue two thousand years ago — it often still helps, but not always.

速 pairs 辵, the walking part, with 束, which is used for its sound; the walking part fits the meaning of moving fast.

Open 速 →

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