(chiefly UK) A majority in a vote that reaches a preset threshold value significantly larger than 50%, such as ²⁄₃, often required instead of a simple majority for reaching a decision; particularly on important matters, such as modifying the bylaws of an association.

(physics) Spacetime viewed on a quantum level, i.e. as a "foam" of randomly appearing and disappearing Planck-scale wormholes (black holes and white holes).

Alternative letter-case form of the quality (the upper class)

(UK, idiomatic, archaic) The upper class, the high society, the gentry; the people of quality.

Quaker / (entomology) Any of various lycaenid butterflies of the genus Pithecops.

(astronomy) A hypothetical exotic star composed of quark matter.

Alternative form of quacksalver.

plural of quad bike

plural of quadratic formula

simple past tense and past participle of quadruple-click