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interactional

 - 3 dictionary results

in⋅ter⋅ac⋅tion

  [in-ter-ak-shuhn]
Use interactional in a Sentence
–noun
1. reciprocal action, effect, or influence.
2. Physics.
a. the direct effect that one kind of particle has on another, in particular, in inducing the emission or absorption of one particle by another.
b. the mathematical expression that specifies the nature and strength of this effect.
Origin:
1825–35; inter- + action

Related forms:
in⋅ter⋅ac⋅tion⋅al, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

interaction 
1832, from inter- + action. The verb interact is first attested 1839.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: in·ter·ac·tion
Pronunciation: "int-&-'rak-sh&n
Function: noun
: mutual or reciprocal action or influence<interaction of the heart and lungs> —in·ter·ac·tion·al /-shn&l, -sh&n-&l/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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