From The Collaborative International Dictionary of English v.0.44 [gcide]:
Interaction \In'ter*ac"tion\, noun
1. Intermediate action.
2. Mutual or reciprocal action or influence; as, the interaction of the heart and lungs on each other.
3. Hence: (Physics) The effect, such as exertion of a force, that one object exerts on another, especially the capture or emission of a particle. [PJC]
4. Communication between people, or the actions of people that affect others. [PJC]
From WordNet (r) 2.0 [wn]:
noun
1: a mutual or reciprocal action; interacting
2: (physics) the transfer of energy between elementary particles or between an elementary particle and a field or between fields; mediated by gauge bosons [syn: {fundamental interaction}]
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
51 Moby Thesaurus words for "interaction": ESP, alternation, answer, coaction, commerce, communication, communion, complementary distribution, concurrence, congress, connection, contact, conversation, converse, cooperation, correspondence, dealing, dealings, engagement, exchange, information, interchange, intercommunication, intercommunion, intercourse, interlacing, intermeshing, interplay, intertwining, interweaving, interworking, linguistic intercourse, mesh, meshing, message, quid pro quo, reply, response, seesaw, social intercourse, speaking, speech, speech circuit, speech situation, talking, telepathy, tit for tat, touch, traffic, truck, two-way communication
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Let's see what we can do if we put our heads together.
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