/ Dictionary / Index C C supply: Meaning and Definition of Find definitions for: C supply Pronunciation: [key] — Electronics. Electronics. a battery or other source of power for supplying a constant voltage bias to a control electrode of a vacuum tube. Also calledCf. A supply, B supply. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. C star CSW Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language