/ Dictionary / Index P pulse-code modulation: Meaning and Definition of Find definitions for: pulse'-code modula"tion Pronunciation: (puls'kōd"), [key] — Telecommunications. Telecommunications. a form of modulation that transforms a wave-form, as an audio signal, into a binary signal in which information is conveyed by a coded order of pulses for transmission, storage on a disk, or processing by a computer. Abbr.: PCM Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pulsebeat pulse dialing Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language