1. a scientist who studies the functions and processes of living organisms and their parts

Examples

• The physiologist studied how the heart pumps blood through the body.
• She became a plant physiologist to understand how trees respond to drought.
• The exercise physiologist helped athletes improve their performance.
• Marine physiologists research how fish adapt to deep ocean pressure.
• The physiologist’s research focused on brain function during sleep.
• A respiratory physiologist studies how lungs process oxygen.
• The university hired a new physiologist for their biology department.