(set theory) A set with certain openness and completeness properties.

Alternative form of put on a pedestal

In plastering, a particularly good trowelled surface.

(mathematics, order theory) A subset of a poset which contains any ascending chain which starts at any element of itself.

(mathematics, order theory) A subset of a poset which contains any descending chain which starts at any element of itself.

plural of set-off

That which is set off against another thing; an offset. / (dated) That which is used to improve the appearance of anything; a decoration; an ornament.

(idiomatic) To believe that something is very necessary or important; to value highly.

Alternative spelling of set piece

(colloquial, idiomatic) A car.