WordNet (r) 3.0 (2006):

sine wave
    n 1: a wave whose waveform resembles a sine curve

Moby Thesaurus II by Grady Ward, 1.0:

18 Moby Thesaurus words for "sine wave":
   Lissajous figure, alternation, back-and-forth, coming and going,
   ebb and flow, flux and reflux, reciprocation, rhythmic play,
   seesaw, seesawing, teeter, teeter-totter, teeter-tottering,
   teetering, to-and-fro, tottering, ups and downs, wigwag



The Free On-line Dictionary of Computing (30 December 2018):

sine wave

    A waveform of a single constant frequency and
   amplitude that continues for all time.

   Compare wavelet.

   (1994-11-09)