[f. prec. + -IST.] One who holds the undulatory theory of light.
1834. Whewell, in Todhunter, Acc. Writ. (1876), II. 194. We undulationists do not conceive that we are in many points inferior to our adversaries.
1881. Nature, XXIV. 382/1. I suppose that in the ordinary language of undulationists the velocity of light means … the velocity with which an individual wave travels.
