I want to translate the terminology “fusion category” into Chinese, so I should know the exact meaning of "fusion". There are two translations in Oxford Advanced Learner’s Dictionary:


1.the process or result of joining two or more things together to form one 


2.(also nuclear fusion )( physics )the act or process of combining the nuclei(= central parts) of atoms to form a heavier nucleus, with energy being released


Which one? Or something else?


Maybe, the first one is a better choice. Who can tell me? Thank you in advance.



What is the exact meaning of "fusion" in the terminology “fusion category”？
I think that


$$
\text{"the process or result of joining two or more things together to form one"}
$$


Is a good description, that also reflects the origin of the terminology in the term "fusion category". Here, the things that are being joined (=fused) are the objects of the category, and the new entity that they form after fusion is their product (also called tensor product, or fusion product) in the category.


