physical chemistry

WordReference Random House Unabridged Dictionary of American English © 2026

phys′ical chem′istry, 

1. Chemistry the branch of chemistry dealing with the relations between the physical properties of substances and their chemical composition and transformations.

• 1890–95

Collins Concise English Dictionary © HarperCollins Publishers::

physical chemistry noun

1. the branch of chemistry concerned with the way in which the physical properties of substances depend on and influence their chemical structure, properties, and reactions