physicist

noun2

1. •
   A person whose occupation specializes in the science of physics, especially at a professional level.

   • Thus we may say, that while the Naturalist employs principally the ideas of resemblance and life, the Physicist proceeds upon the ideas of force, matter, and the properties of matter. — 1840
2. •
   (no longer used) A believer in the theory that the fundamental phenomena of life are to be explained upon purely chemical and physical principles (opposed to vitalist).