01 n. Intermediate action.
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1.
Intermediate action.
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2.
Mutual or reciprocal action or influence; as, the interaction of the heart and lungs on each other.
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3.
The effect, such as exertion of a force, that one object exerts on another, especially the capture or emission of a particle.(Physics)
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4.
Communication between people, or the actions of people that affect others.