interaction — English Dictionary

Noun

1. The situation or occurrence in which two or more things act upon one another to produce an effect; the effect resulting from such a situation or occurrence.

   Usage

   • Countable
   • Uncountable

   Examples

   Be aware of interactions between different medications.

   Such technologies will also “shape future human interaction with the machines we created,” he added.

   More examples (1)

   At the beginning of September South Western Railway withdrew its Class 442 EMUs from service due to a safety issue concerning interaction with lineside signals.

2. A conversation or exchange between people.

   Usage

   • Countable
   • Uncountable

   Synonyms

   transaction

   Examples

   I enjoyed the interaction with a bunch of like-minded people.

   More examples (1)

   Another 'basic' is staff interaction with customers - and here, ScotRail excelled. Every single one of them whom RAIL engaged with was polite and chatty, and some were even humorous!

Noun

1. a mutual or reciprocal action; interacting

   Broader terms

   action

2. (physics) the transfer of energy between elementary particles or between an elementary particle and a field or between fields; mediated by gauge bosons

   Synonyms

   fundamental interaction

   Broader terms

   physical phenomenon