Interactional

[in-ter-ak-shuh n] /ˌɪn tərˈæk ʃən/

noun
1.
reciprocal action, effect, or influence.
2.
Physics.

/ˌɪntərˈækʃən/
noun
1.
a mutual or reciprocal action or influence
2.
(physics) the transfer of energy between elementary particles, between a particle and a field, or between fields See strong interaction, electromagnetic interaction, fundamental interaction, gravitational interaction, weak interaction, electroweak interaction
n.

1812, from inter- + action.

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