IPA: /ɪˈkɒlədʒɪst/
KK: /ɪˈkɑlədʒɪst/
A person who studies the relationships between living things and their environment.
The ecologist conducted research on the effects of climate change on local wildlife.
Ecologist → It is formed from "eco-" (from Greek "oikos", meaning house or environment) and "-logist" (from Greek "logia", meaning study or science). An ecologist is someone who studies the environment or the relationships between living organisms and their surroundings.
Think of 'oikos' meaning 'house' or 'environment' and 'logia' meaning 'study' — an ecologist studies the environment like a house for living things.