(astronomy) Four stars which form a stellar system, such that they orbit the point of equilibrium of their gravitational fields; a quadruple star system.

plural of quad play

A service offering in which four services are offered together, especially television, broadband, and fixed and mobile telephone.

plural of quail-dove

Alternative spelling of quail-dove

Any of several species of bird in the genera Geotrygon and Starnoenas of the pigeon family found in the Americas.

(printing) An em quad.

(typography) A quad with a fixed width of 1 en.

(typography) A quad which has a fixed width of 1 em.

A system in which the delivery of a service or the quality of a product is assessed, and compared with that required.