noun
cathode
Cathode (noun) means the electrode in a cell or similar device through which positive current flows out, meaning electrons flow in; depending on the device, it may be positive or negative compared with the other electrode, the anode.
noun
1
The electrode in a cell or similar device through which positive current flows out, meaning electrons flow in; depending on the device, it may be positive or negative compared with the other electrode, the anode.
2
The electrode where positive ions gain electrons, often causing metal to build up on it.
3
The electrode that releases electrons into a vacuum tube or a tube filled with gas.
4
In a semiconductor device, the electrode joined to the n-type side of a p-n junction.
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Etymology
From Ancient Greek κατα- (kata-, “down”) and ὁδός (hodós, “journey, way”), equivalent to Ancient Greek κάθοδος (káthodos, “way down, descent”). Coined by English polymath William Whewell in 1834 for Michael Faraday, who introduced it later that year. By surface analysis, cath- (alternative form of cata-) + -ode.
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Rhymes for cathode
See all rhymes for cathode →Frequently asked questions
What is the meaning of cathode?
"cathode" (noun) means the electrode in a cell or similar device through which positive current flows out, meaning electrons flow in; depending on the device, it may be positive or negative compared with the other electrode, the anode.
What is the opposite of cathode?
The opposite of "cathode" is anode.
What are the different meanings of cathode?
"cathode" has 3 main meanings: 1. The electrode in a cell or similar device through which positive current flows out, meaning electrons flow in; depending on the device, it may be positive or negative compared with the other electrode, the anode; 2. The electrode where positive ions gain electrons, often causing metal to build up on it; 3. The electrode that releases electrons into a vacuum tube or a tube filled with gas.
