undulationist

noun

undulationist

noun

Etymology From undulation + -ist.

1

Dated One who believes that light is a wave.

the undulationist will conceive that his opinions have gained no small accession of evidence by this exemplification of what they will account for1833, William Whewell, Address Delivered in the Senate-House at Cambridge:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.