anode (redirected from anodal)

anode (ăn`ōd), electrode through which current enters an electric device. In electrolysis, it is the positive electrode in the electrolytic cell.

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anode

Terminal or electrode from which electrons leave a system. In a battery or other source of direct current, the anode is the negative terminal. In a passive load it is the positive terminal. In an electron tube, electrons from the cathode travel across the tube toward the anode; in an electroplating cell, negative ions are deposited at the anode.

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anode

The terminal on a device that receives current. It may be considered positive or negative depending on the application. See cathode.

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anode

1. the positive electrode in an electrolytic cell

2. the positively charged electrode in an electronic valve

3. the negative terminal of a primary cell

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anode [′a‚nōd]

(electricity)

The terminal at which current enters a primary cell or storage battery; it is positive with respect to the device, and negative with respect to the external circuit.

(electronics)

The collector of electrons in an electron tube. Also known as plate; positive electrode.

In a semiconductor diode, the terminal toward which forward current flows from the external circuit.

(physical chemistry)

The positive terminal of an electrolytic cell.

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anode

In an electric system to protect underground iron pipes or structures from electrochemical action, a metallic rod which is driven in the ground; direct current is passed through the rod to the earth, and then through the iron pipe or structure, in a direction opposite to that resulting from the electrochemical properties of the soil.