What does interactions mean

If your asking about what interactions mean in Science then this is the definition  --> a mutual or reciprocal action; interacting.

If your asking for the physics definition for interactions mean then this is the definition --> transfer of energy between elementary particles or between an elementary particle and a field or between fields; mediated by gauge bosons.

Or, if your asking for what interactions mean in general then this is the definition --> 1 : mutually or reciprocally active. 2 : involving the actions or input of a user especially : of, relating to, or being a two-way electronic communication system (such as a telephone, cable television, or a computer) that involves a user's orders (as for information or merchandise) or responses (as to a poll).

Hope this helps you, and I hope you have a wonderful weekend and a wonderful Thanksgiving bye! Your welcome.

#1  sara was always tasked with selecting birthday presents for her friends and family because everyone admired her  impeccable taste. 

impeccable (adj): perfect, flawless

#2  they moved to the united states many years ago, but their  insular  attitudes made it difficult for them to socialize. 

insular (adj): isolated; separate

#3  the professor explained the  semantic  relationship between the two nouns used in the sentence. 

semantic (adj): related to words or the meanings of words 

happy to : )