A fishing net that is used by securing it to a fixed underwater framework.

To fish using a set net.

plural of set theory

plural of transitive set

(set theory) Any set X such that for any x ∈ X, if y ∈ x then y ∈ X; equivalently, such that if x ∈ X and x is not an urelement then x ⊆ X.

(mathematics) A family of sets sharing no elements in common; sets whose intersection is the empty set.

Third-person singular simple present indicative form of set down

plural of breakfast set

The china or other ware used for serving and eating breakfast.

Third-person singular simple present indicative form of set aback