Home › Words › H › hyetologisthyetologist/haɪəˈtɒlədʒɪst/hyetologist · noun — someone who studies rain.Definition from Wiktionary (CC BY-SA 3.0).hyetologist is pronounced /haɪəˈtɒlədʒɪst/.EtymologyFrom hyetology + -ist.nounSomeone who studies rain.e.g.“At sundown, when the moon is a bloody eye on the horizon, [...] the local hyetologist chants his rain song in a piercing clamorous falsetto.” — 1982, TC Boyle, Water Music, Penguin, published 2006, page 343:Definitions & examples from Wiktionary (CC BY-SA 3.0).