IPA: /ˈsaɪəntɪst/
KK: /ˈsaɪəntɪst/
A person who studies or has a deep understanding of science, especially in fields like biology, chemistry, or physics.
The scientist conducted experiments to learn more about climate change.
Scientist → It is formed from "science" (from Latin "scientia", meaning knowledge) and the suffix "-ist" (meaning one who practices or is concerned with). A scientist is one who practices or is concerned with knowledge, particularly in the field of natural or physical sciences.
Think of someone who is deeply involved in 'knowledge' ('scientia') — that's what a scientist does, they practice and explore knowledge.