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The Clue
Particle-based philosophy (7 letter answer)
The Answer
ATOMISM
Tags
Notes
The answer ATOMISM is so rare that it appears less than once every 2500 puzzles.
Definition
ATOMISM as a noun:
1. (psychology) a theory that reduces all mental phenomena to simple elements (sensations and feelings) that form complex ideas by association
2. (atomism, atomic theory, atomist theory, atomistic theory) = (chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles; "the ancient Greek philosophers Democritus and Epicurus held atomic theories of the universe"