Term: optic axis: in a doubly refracting crystal, the line in the direction of which no double refraction occurs
Candidate hypernym: axis: a straight line through a body or figure that satisfies certain conditions → 1
Candidate hypernym: appendicular artery: the branch of the ileocolic artery that supplies the vermiform appendix → 0
Candidate hypernym: organization: a group of people who work together → 0
Candidate hypernym: unenlightenment: a lack of understanding → 0
Candidate hypernym: hydrogen: a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe → 0
Candidate hypernym: pine hyacinth: erect clematis of Florida having pink to purple flowers → 0
Candidate hypernym: anglicism: an expression that is used in Great Britain (especially as contrasted with American English) → 0
Candidate hypernym: beachfront: a strip of land running along a beach → 0
Candidate hypernym: silver whiting: a dull silvery whiting of southern Atlantic and Gulf Coasts of the United States → 0
Candidate hypernym: bitter betch: European perennial toxic vetch → 0
Candidate hypernym: no man's land: land that is unowned and uninhabited (and usually undesirable) → 0