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

(physics) The theory that (most) baryons and mesons are composed of bound quarks and antiquarks.

(physics) A model organizing baryons and mesons according to their composition of bound quarks and antiquarks in groups of two or three; part of the Standard Model.

plural of quark star

(physics, obsolete) the anti-bottom quark

(physics) The antiquark corresponding to the down quark.

(physics) The antiquark corresponding to the strange quark.

(physics) The antiquark corresponding to the charm quark.

(physics) The antiquark corresponding to the up quark.

(physics) the antiquark corresponding to the top quark.