導体(どうたい)

どうたい
noun
conductor (of electricity or heat)
technical
See also: 胴体(どうたい) (torso; fuselage (homophone))
1. conductor; conductor of electricity or heat
A material that allows electric current or heat to flow through it easily. Metals like copper and aluminum are typical conductors.
銅(どう)は良(よ)い導体(どうたい)だ。
Copper is a good conductor.
金属(きんぞく)は電気(でんき)の導体(どうたい)として使(つか)われる。
Metals are used as electrical conductors.
超伝導体(ちょうでんどうたい)は電気(でんき)抵抗(ていこう)がゼロになる特殊(とくしゅ)な物質(ぶっしつ)だ。
A superconductor is a special material whose electrical resistance drops to zero.

導体(どうたい) is a physics/engineering term for a material that conducts electricity or heat. Composed of 導(どう) (conduct, guide) + 体(たい) (body, substance).

Common collocations

  • 良(りょう)導体(どうたい): good conductor
  • 超伝導体(ちょうでんどうたい): superconductor
  • 電気(でんき)の導体(どうたい): electrical conductor

Related words

Watch out

Do not confuse with 胴体(どうたい) (torso; fuselage of an aircraft), which has the same pronunciation but completely different meaning and kanji.

Related Words

Antonym: 絶縁体(ぜつえんたい) (insulator)
Related: 半導体(はんどうたい) (semiconductor)
Related: 抵抗(ていこう) (resistance)
general
Added 2026.3.21 18:55 · Revised 2026.10.8 21:48
18000/18343_doutai