Term: down quark: a stable quark with an electric charge of -1/3 and a mass 607 times that of an electron
Candidate hypernym: quark: (physics) hypothetical truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3 → 1
Candidate hypernym: fairway: the area between the tee and putting green where the grass is cut short → 0
Candidate hypernym: surface ship: a warship that operates on the surface of the water → 0
Candidate hypernym: barbarea: biennial or perennial herbs of north temperate regions: winter cress → 0
Candidate hypernym: bird's nest fern: tropical Old World or Australian epiphytic fern frequently forming tufts in tree crotches → 0
Candidate hypernym: negativity: the character of the negative electric pole → 0
Candidate hypernym: subcontinent: a large and distinctive landmass (as India or Greenland) that is a distinct part of some continent → 0
Candidate hypernym: beating: the act of overcoming or outdoing → 0
Candidate hypernym: prismatoid: a polyhedron whose vertices all lie in one or the other of two parallel planes; the faces that lie in those planes are the bases of the prismatoid → 0
Candidate hypernym: glaucoma: an eye disease that damages the optic nerve and impairs vision (sometimes progressing to blindness) → 0
Candidate hypernym: water starwort: any of several aquatic plants having a star-shaped rosette of floating leaves; America, Europe and Asia → 0