Definitions

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

  • n. The act or process of interacting.
  • n. The state of undergoing interaction.
  • n. Physics Any of four fundamental ways in which elementary particles and bodies can influence each other, classified as strong, weak, electromagnetic, and gravitational.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The situation or occurrence in which two or more objects or events act upon one another to produce a new effect; the effect resulting from such a situation or occurrence.
  • n. A conversation or exchange between people.

from the GNU version of the Collaborative International Dictionary of English

  • n. Intermediate action.
  • n. Mutual or reciprocal action or influence.
  • n. The effect, such as exertion of a force, that one object exerts on another, especially the capture or emission of a particle.
  • n. Communication between people, or the actions of people that affect others.

from The Century Dictionary and Cyclopedia

  • n. Mutual or reciprocal action; action or influence of things upon each other.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a mutual or reciprocal action; interacting
  • n. (physics) the transfer of energy between elementary particles or between an elementary particle and a field or between fields; mediated by gauge bosons

Etymologies

inter- +‎ action (Wiktionary)

Examples

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