IPA: /ɡleɪsiˈɒlədʒɪst/
KK: /ˈɡleɪ.si.ɑː.lə.dʒɪst/
A scientist who studies ice and glaciers, focusing on their formation, movement, and effects on the environment.
The glaciologist presented her research on the melting glaciers at the conference.
Glaciologist is formed from "glacies" (meaning ice) and "-ologist" (meaning one who studies). The word refers to a person who studies ice and glaciers.
Think of someone who studies 'ice' ('glacies') — that's what a glaciologist does.