放射源 (fàng shè yuán) — radiation source, radioactive source

Definition

noun
radiation sourceradioactive source
Measure word · 个

Examples

  • 放射源。
    fàng shè yuán Zài gōng yè zhōng bèi guǎng fàn shǐ yòng.
    Radiation sources are widely used in industry.
  • 放射源。
    Shí yàn shì bì xū tuǒ shàn chǔ lǐ fèi qì de fàng shè yuán.
    The laboratory must properly dispose of discarded radiation sources.
  • 放射源。
    Zhè zhǒng fàng shè yuán chǎn shēng de fú shè fēi cháng qiáng.
    This kind of radiation source produces very strong radiation.

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.

放射radiating
放fàngemit射shèshoot
联合Side by side
源yuánsource

放射 means radiating and 源 means source, so the word names something that radiates rays.

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
攵Written in full as攴pūhand, action
Sound part声符shēngfú
方
方fāng放fàng
Same sound today

放 uses 方 for its sound and 攵, a hand/action part, to mark an action of release.

Open 放 →

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

In 射, the left part comes from 弓 (bow) and 矢 (arrow), and the right part comes from a hand drawing the bowstring.

Open 射 →

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
水水shuǐwater
Sound part声符shēngfú
原
原yuán源yuán
Same sound today

源 combines 水 (water) and 原 (origin): 水 points to water, and 原 gives the sound.

Open 源 →

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