• For two or more waves of a single frequency, a definite phase relationship. Two waves, for instance, are in phase if their crests and troughs meet at the same point at the same time. Interference patterns may be formed by radiation emitted by coherent sources, and high levels of coherence characterize laser radiation.
  • Any form of temporal or phase correlation.
  • clarity or intelligibility, as in a clear reception of a voice transmission.
  • synonymcoherency