/kath"ohd/ , n.
1. the electrode or terminal by which current leaves an electrolytic cell, voltaic cell, battery, etc.
2. the positive terminal of a voltaic cell or battery.
3. the negative terminal, electrode, or element of an electron tube or electrolytic cell.
[ 1825-35; káthodos a way down, equiv. to kat- CAT- + hodós way ]