電 導(でんどう)

でんどう

noun

electrical conduction; electrical conductivity

1. electrical conduction; electrical conductivity

The transmission of electrical current through a material. Used in physics and engineering to describe the ability of a substance to conduct electricity.

銅(どう)は電導(でんどう)率(りつ)が高(たか)い。

Copper has high electrical conductivity.

この素材(そざい)は電導(でんどう)性(せい)に優(すぐ)れている。

This material has excellent electrical conductivity.

超(ちょう)電導(でんどう)とは、特定(とくてい)の温度(おんど)以下(いか)で電気(でんき)抵抗(ていこう)がゼロになる現象(げんしょう)のことである。

Superconductivity is the phenomenon in which electrical resistance drops to zero below a certain temperature.

A physics term composed of 電(でん) (electricity) and 導(どう) (conduct/guide). Often interchangeable with 伝導(でんどう) in the context of electrical conduction, though 伝導(でんどう) can also refer to heat conduction.

Common collocations

電導(でんどう)性(せい): electrical conductivity
電導(でんどう)率(りつ): conductivity rate
超(ちょう)電導(でんどう): superconductivity
電導(でんどう)体(たい): conductor (of electricity)

Similar words

伝導(でんどう): conduction (broader term, includes heat and electrical conduction)
導電(どうでん): electrical conduction (alternate word order, same meaning)
通電(つうでん): passing of electrical current (focus on the act of sending current through)

Usage

The compound 超(ちょう)電導(でんどう) (superconductivity) is one of the most commonly encountered uses of this word. In scientific contexts, 電導(でんどう) specifically refers to electrical conduction, while 伝導(でんどう) is the broader physical concept.

Related Words

Related: 伝導(でんどう) ({伝導|でんどう})

Compare: 導電 (electrical conduction)

Compare: 通電(つうでん) (passing of electrical current)

general

Added 2026.5.3 9:00 · Revised 2026.9.2 13:02

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