Term: principal axis: a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted
Candidate hypernym: axis: a straight line through a body or figure that satisfies certain conditions → 1
Candidate hypernym: progestin: any of a group of steroid hormones that have the effect of progesterone → 0
Candidate hypernym: fish family: any of various families of fish → 0
Candidate hypernym: mark: a visible indication made on a surface → 0
Candidate hypernym: antelope: graceful Old World ruminant with long legs and horns directed upward and backward; includes gazelles; springboks; impalas; addax; gerenuks; blackbucks; dik-diks → 0
Candidate hypernym: slopshop: a store that sells cheap ready-made clothing → 0
Candidate hypernym: verb: a content word that denotes an action, occurrence, or state of existence → 0
Candidate hypernym: ghanian monetary unit: monetary unit of Ghana → 0
Candidate hypernym: sour salt: crystals of citric acid used as seasoning → 0
Candidate hypernym: secondary coil: coil such that current is induced in it by passing a current through the primary coil → 0
Candidate hypernym: atmosphere: a particular environment or surrounding influence → 0