(mathematics) A function that maps a real number to the smallest integer that is no smaller than it.

plural of ceiling function

(aviation) The maximum altitude above sea level that an aircraft or missile can maintain horizontal flight under normal conditions.

plural of absolute ceiling

plural of dropped ceiling

Especially in America, a social barrier to further promotion or progression, in employment and elsewhere, for a person of East Asian ethnicity.

A social barrier to consideration (by cisgender women) of transgender women as viable sexual partners. / Used other than figuratively or idiomatically: see cotton, ceiling.

(politics, economics) The limit up to which an entity (usually a government) is legally allowed to borrow.

plural of ceiling fan

An informal (and often unacknowledged) barrier to promotion or advancement, in employment and elsewhere, for gay and lesbian people.