Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The physics of molecular, atomic, nuclear, and subnuclear systems.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. That branch of physics that deals with objects smaller than a molecule

from The Century Dictionary and Cyclopedia

  • n. The physics of minute masses or of the ultimate particles and structure of matter: opposed to macrophysics, which deals with bodies taken as a whole.

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