Chemist (noun)

1. A scientist who specializes in the study of chemistry.
2. A person who is trained in the preparation and dispensing of drugs.

Origin:

From latin word "chemistria" which means "alchemy".

Examples:

1. The chemist in the lab was working on synthesizing a new compound.
2. I went to the chemist to get my prescription filled.
3. The chemist explained the reaction taking place in the test tube.
4. The chemist published several papers on the properties of transition metals.
5. I asked the chemist for advice on cleaning products for my kitchen.