from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The study of nature and the physical universe before the advent of modern science.
from the GNU version of the Collaborative International Dictionary of English
- adj. originally, the study of nature in general; the natural sciences; in modern usage, that branch of physical science, commonly called physics, which treats of the phenomena and laws of matter and considers those effects only which are unaccompanied by any change of a chemical nature; -- contrasted with
mental philosophyand moral philosophy.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the science of matter and energy and their interactions
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