noun
chemist
KEM-ist/ˈkemɪst/
A scientist who studies substances and their reactions.
The chemist adds a reagent and watches the color change.

Etymology
The ancestor meant 'alchemist,' a practitioner whose work included practical chemistry and metallurgy alongside occult pursuits. The name later acquired the more strictly scientific sense of someone who studies chemical substances and reactions.
In context
In 1802, a Swedish chemist named Anders Gustaf Ekeberg found a new metal in some mineral ores. Now, this metal proved exceptionally difficult to dissolve in acid.
More examples
- Several chemists joined the laboratory.
- She trained as a chemist.
- The chemist analyzed the sample.
Forms
chemist · chemists
chemistry noun — the study of substances and their reactions