- naturalism - (philosophy) the doctrine that the world can be understood in scientific terms without recourse to spiritual or supernatural explanations
--1 is a kind of philosophical doctrine, philosophical theory
- naturalism, realism - an artistic movement in 19th century France; artists and writers strove for detailed realistic and factual description
--2 is a kind of artistic movement, art movement
- naturalism, realism - an artistic movement in 19th century France; artists and writers strove for detailed realistic and factual description