noun: (set theory) (symbol: ⊇) With respect to another set, a set such that each of the elements of the other set is also an element of the set.
noun: (weightlifting) Two or more different physical exercises performed back to back, without a period of rest between them. The exercises may employ the same muscle group, or opposing muscle groups.
verb: (weightlifting, transitive) To perform (different physical exercises) back to back, without a period of rest between them.
