anode

IPA/ˈænəʊd/
KK[ˈænˌod]IPA/ˈænəʊd/

anode — noun

  • anodesingular
  • anodesplural

1. One of the two metal connectors in a battery or similar device through which cur

1.名詞B2
釋義

One of the two metal connectors in a battery or similar device through which current moves. In a power-producing battery, the anode acts as the negative end that gives off electrons. In a device that uses electricity for chemical work — for example, electroplating — the anode serves as the positive end.

例句

Dahlia noticed a blue-green crust forming on the anode of her old car battery.

collocation: forming on the anode

In science class, the teacher showed how an electrolytic cell's anode attracts oxygen bubbles.

passive: showed how + clause

同義詞
  • electrode

    A broader term for any conductor through which electricity enters or leaves a device.

  • terminal

    Refers to the connection point rather than the chemical function; less precise technically.

反義詞
  • cathode

    The opposite electrode; in a battery, electrons enter through the cathode.

文法句型

the anode

anode + noun

用法筆記

Polarity depends on device type: in a battery generating power, the anode is negative (electrons flow out); in a device consuming power for a chemical process, the anode is positive (electrons flow in). Often taught alongside its opposite, the cathode.

常見錯誤

❌The anode always has a positive charge.
✅The anode can be positive or negative, depending on whether the device is a battery or an electrolytic cell.
💡In a battery, the anode is the negative side where electrons leave.