Longman Dictionary of Contemporary English homepage

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]

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary