[ 'kaθəʊd ]
■ noun a negatively charged electrode. The opposite of anode .
↘the positively charged electrode of an electrical device, such as a primary cell, that supplies current.
Derivatives
cathodal adjective
cathodic kə'θɒdɪk adjective
Origin
C19: from Gk kathodos 'way down', from kata- 'down'+ hodos 'way'.