pulse-amplitude modulation: Meaning and Definition of

pulse'-am'pli•tude modula"tion

Pronunciation: (puls'am'pli-td", -tyd"), [key]
— Telecommunications. Telecommunications.
  1. modulation of the amplitude of a train of electric pulses used to carry signalsAbbr.: PAM
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.