- A measure of the strength of interaction between two systems, such as particles.
- A numerical value which expresses the degree of coupling between two systems, especially circuits. This value is always greater than 0 and less than 1, or 0% and 100% respectively. A coefficient of coupling of 0 would represent no coupling, and 1 would be perfect coupling.
- synonymcoupling constant
- synonymcoupling factor
- synonymcoupling ratio