oxide-coated cathode
oxide-coated cathode
[′äk‚sīd ‚kōd·əd ′kath‚ōd] (electronics)
A cathode that has been coated with oxides of alkaline-earth metals to improve electron emission at moderate temperatures. Also known as Wehnelt cathode.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.