導体(どうたい)

どうたい
noun
conductor (of electricity)
1. conductor; electrical conductor
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(ちょうでんどう)導体(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(ちょうでんどう)導体(どうたい): superconductor
  • 電気(でんき)の導体(どうたい): electrical conductor

RELATED TERMS:

  • 絶縁体(ぜつえんたい): insulator (opposite)
  • 半導体(はんどうたい): semiconductor (intermediate conductivity)
  • 抵抗(ていこう): resistance

HOMOPHONE:
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.

general
Added 2026.3.21 18:55 · Revised 2026.3.29 13:19
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