Home › Words › U › undulationistundulationistundulationist means one who believes that light is a wave.Among words judged in Lexicurio's Arena, undulationist ranks #16,749 of 42,762 for Qualifying.EtymologyFrom undulation + -ist.nounOne who believes that light is a wave.e.g.“the undulationist will conceive that his opinions have gained no small accession of evidence by this exemplification of what they will account for” — 1833, William Whewell, Address Delivered in the Senate-House at Cambridge:Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.undulationism 86% match — The theory that light is a wave. vs undulationist →undular 60% match — Having the form of a moving wave vs undulationist →undulatory 59% match — That undulates, or that causes undulations vs undulationist →undulous 59% match — undulating, wavy vs undulationist →undulation 58% match — An instance or act of undulating. vs undulationist →undulating 58% match — Moving up and down like waves; wavy. vs undulationist →undulate 55% match — To cause to move in a wavelike motion. vs undulationist →undulary 54% match — Moving like waves; undulatory. vs undulationist →