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半径 (bàn jìng) — radius

Definition

noun
radius

Examples

  • 半径，。
    Yǐ zhī yuán de bàn jìng, jiù kě yǐ jì suàn chū tā de miàn jī.
    Given the radius of a circle, you can calculate its area.
  • 半径。
    Tā men zài bàn jìng shí gōng lǐ fàn wéi nèi jìn xíng le sōu suǒ.
    They conducted a search within a radius of ten kilometers.
  • 半径，。
    Zhè liàng chē de zhuǎn wān bàn jìng hěn xiǎo, shì hé zài zhǎi lù shang xíng shǐ.
    This car has a small turning radius, making it suitable for narrow roads.

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.

半bànhalf
径jìngdiameter

The 径 (diameter) is cut into a 半 (half), giving the radius.

Characters in this word

Two or more meaningful parts placed together so that their meanings combine into a new one.

The shape pairs 八 (to divide) with 牛 (cow), showing a cow cut into two halves.

Open 半 →

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 徑; 径 is its simplified writing.

Meaning part形符xíngfú
彳彳chì
Sound part声符shēngfú
巠
巠jīng徑
Same sound today

The traditional form 徑 is built from 彳 and 巠, with 巠 giving the sound; the simplified 径 is a later shorthand, so its parts are not the historical pieces.

Open 径 →
Appears in
HSK 3.0 Level 7-9Math

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