Alternative form of John Q. Public

Alternative form of QED (“initialism of quod erat demonstrandum”)

Alternative form of QED (“some fact or scenario that proves an argument or proposition”)

(informal) Alternative spelling of barbecue

(idiomatic) Alternative spelling of mind one's p's and q's

(in prescriptions) as much as you wish

quod vide; which see; used to reference material mentioned in text.

Some fact or scenario that proves an argument or proposition; a justification.

(mathematics, dated) Initialism of quod erat demonstrandum (“what had to be proved; what was to be demonstrated”): placed at the end of a mathematical proof to show that the theorem under discussion is proved.

Abbreviation of quality assurance/quality control (“various process management procedures employed to preserve and enhance the quality of products or services”).