Meaning of constructive interference

construc'tive interfer'ence

Pronunciation: [key]
— Physics. Physics.
  1. the interference of two or more waves of equal frequency and phase, resulting in their mutual reinforcement and producing a single amplitude equal to the sum of the amplitudes of the individual waves. Cf. destructive interference.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.