Researcher (noun)

A person who engages in research, especially in an academic or scientific context.

Origin:

Mid 19th century: from french chercheur, from chercher "seek", from latin circare "go around".

Examples:

1. She is a researcher in the field of neuroscience.
2. He is a researcher at the university.
3. The researcher published several papers on the topic.
4. The researcher conducted a study on the effects of the drug.
5. The researcher presented his findings at the conference.