Longman Dictionary of Contemporary English homepage

Topic: ELECTRICITY

Date: 1800-1900
Language: Greek
Origin: kathodos 'way down', from kata- ( CATACLYSM) + hodos 'way'

cathode

 noun
     
cath‧ode [countable]
TEE technical the negative electrode, marked (-), from which an electric current leaves a piece of equipment such as a battery [≠ anode]
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