electrode

electrode — 名詞

1. the place on a battery or machine where electricity connects as it moves between

1.名詞B2
釋義

電極接點

電池等裝置上電流進出的接觸點

the place on a battery or machine where electricity connects as it moves between the device and an outside circuit

例句

The positive electrode on the battery has a small plus sign next to it.

電池的正極接點旁邊有一個小小的加號標示。

positive/negative electrode — naming the polarity

Salma checked that the battery electrodes were clean before reconnecting the wires.

Salma 確認電池的電極接點都已清潔乾淨，才重新接上電線。

同義詞
  • terminal

    more general term for any connection point; electrode specifically implies current entering or leaving

  • contact

    emphasizes the touching point between two conductors; less specific than electrode

文法句型

electrode + of [device]

positive/negative + electrode

用法筆記

This sense emphasizes the physical terminal location — the point where a wire attaches — not the wire itself. The positive and negative electrodes on a battery are often marked with + and − symbols.

常見錯誤

❌I touched the two electrodes together to complete the circuit.
✅I touched the two wires together to complete the circuit.
💡An electrode is the terminal point, not the wire that connects to it.

2. a piece of conducting material, such as a metal rod or wire, that touches a part

2.名詞B2
釋義

電極導體

與電路接觸以導電的金屬棒或材料

a piece of conducting material, such as a metal rod or wire, that touches a part of an electrical system so that current can pass through it

例句

Christopher placed copper electrodes into the liquid to test how electricity passes through it.

Christopher 將銅製電極導體放入液體中，測試電流通過的情形。

copper electrode — material used in chemistry experiments

The doctor gently pressed an electrode against the patient's chest to measure her heart rate.

醫生將一片電極輕輕貼在病人的胸口，測量她的心跳速率。

medical context: electrode on skin for measurement

同義詞
  • conductor

    broader term; any material that lets electricity flow, not necessarily shaped for contact

  • probe

    often implies a pointed or specialized electrode used for testing or measurement

  • lead

    refers to the wire connecting an electrode to a device; more common in medical contexts

文法句型

[material] + electrode

electrode + for/in [application]

用法筆記

Common in medical (ECG electrodes attached to the skin), industrial (welding electrodes), and laboratory settings (electrodes in chemical cells). The material — copper, silver, carbon, or platinum — varies by application.

常見錯誤

❌The electric current flows along the electrode.
✅The electric current flows through the wire to the electrode.
💡An electrode is a point of contact, not the path the current travels along.