IPA: /ˌvʌl.kəˈnɒl.ə.dʒɪst/
KK: /vʌlˈkænəˌlɒdʒɪst/
A person who studies volcanoes and their activity.
The vulcanologist explained the dangers of the recent volcanic eruption.
Vulcanologist → It is formed from "Vulcan" (from Latin *Vulcanus*, meaning the Roman god of fire) and "-ologist" (from Greek *-logia*, meaning the study of). A vulcanologist is someone who studies volcanoes and volcanic activity, relating to the god of fire.
Think of the Roman god of fire, Vulcan, and remember that a vulcanologist is someone who studies fire and volcanoes.