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摩尔 (Mó ěr) — mole (SI unit for amount of substance)

Definition

noun
mole (SI unit for amount of substance)

Examples

  • 摩尔22.4。
    Yì Mó ěr qì tǐ de tǐ jī zài biāo zhǔn zhuàng kuàng xià shì 22. 4 shēng.
    The volume of one mole of gas under standard conditions is 22.4 liters.
  • 摩尔。
    Zhè ge fǎn yìng xū yào liǎng Mó ěr qīng qì.
    This reaction requires two moles of hydrogen gas.
  • 摩尔。
    Tā zhèng zài xué xí Mó ěr de gài niàn.
    He is studying the concept of the mole.

Origin

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.

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

摩 combines 手 (hand) with 麻; the hand part relates to the meaning, and 麻 gives the sound.

Open 摩 →

A drawing of the thing itself, worn down over three thousand years into a few strokes.

假借jiǎjièLater borrowed for its sound alone — the picture has nothing to do with today’s meaning.

This origin belongs to the traditional form 爾; 尔 is its simplified writing.

The traditional form 爾, simplified as 尔, originally drew cloth on a loom with crossing threads. It was borrowed for its sound to write “you,” so the picture is unrelated to that meaning.

Open 尔 →
Appears in
Units & Measurement

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