<u>If your asking about what interactions mean in </u><em><u>Science</u></em><u> then this is the definition</u> --> a mutual or reciprocal action; interacting.
<u>If your asking for the </u><em><u>physics</u></em><u> definition for interactions mean then this is the definition</u> --> transfer of energy between elementary particles or between an elementary particle and a field or between fields; mediated by gauge bosons.
<u>Or, if your asking for what interactions mean </u><em><u>in general</u></em><u> then this is the definition </u>--> 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).
<em>Hope this helps you, and I hope you have a wonderful weekend and a wonderful Thanksgiving bye! Your welcome.</em>
<h3>- Sadie ❤</h3>
Answer:
X means 10 and XXI means 21 in roman numerals. if thats what you mean
Explanation:
