Japanese word

放射

Pronunciation

Romajihōsha

Meaning

  • nounradiation

Example

太陽からの放射が地球を温めます。tai yō ka ra no hō sha ga chi kyū o atata me ma su

Radiation from the sun warms the Earth.

Illustration for 放射 (radiation)

More examples

放射の測定には専用の装置が必要です。hō sha no soku tei ni wa sen yō no sō chi ga hitsu yō de su

Measuring radiation requires special equipment.

Core concept

Describes energy or particles spreading outward from a source, often through space as waves or moving particles.

Common phrases

  • 放射の量hō sha no ryō

    amount of radiation

  • 放射を抑えるhō sha o osa e ru

    reduce radiation

  • 放射の強さhō sha no tsuyo sa

    intensity of radiation

Similar words

輻射fukusha: The outward transfer of energy from a source through space, especially as waves.

Definition in Japanese

物体から電磁波や粒子などが周囲へ放たれること。but tai ka ra den ji ha ya ryū shi na do ga shū i e hana ta re ru ko to

Word origin

The Sino-Japanese compound 放射 (hōsha) combines 放 (hō, "release") and 射 (sha, "shoot") to express sending something outward.

Usage tips

  • In English, radiation includes ordinary sunlight and heat as well as nuclear radiation, so the word does not always imply danger.

Other meanings

  • emissionnoun

Opposites

Related words

  • 放射性hōshaseiradioactivena-adjective
  • 放射するhōshasuruemit radiationverb
  • 放射率hōsharitsuemissivitynoun

Word lists with this word