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| in·ter·ac·tion [ ìntər ákshən ] (plural in·ter·ac·tions) |
noun |
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1. communication or collaboration: communication between or joint activity involving two or more people
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2. reciprocal action: the combined or reciprocal action of two or more things that have an effect on each other and work together
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3. physics force between elementary particles: one of the four fundamental forces, gravitational, electromagnetic, strong, and weak, that act between elementary particles
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