Term: cassegrainian telescope: a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror
Candidate hypernym: reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece → 1
Candidate hypernym: drivel: a worthless message → 0
Candidate hypernym: osage: a member of the Siouan people formerly living in Missouri in the valleys of the Missouri and Osage rivers; oil was found on Osage lands early in the 20th century → 0
Candidate hypernym: fly poison: all parts of plant are highly toxic; bulb pounded and used as a fly poison; sometimes placed in subfamily Melanthiaceae → 0
Candidate hypernym: proxy fight: a measure used by an acquirer to gain control of a takeover target; acquirer tries to persuade other shareholders that the management of the target should be replaced → 0
Candidate hypernym: siderite: a meteorite consisting principally of nickel and iron → 0
Candidate hypernym: ureterocele: prolapse of the end of the ureter into the bladder; may obstruct urine flow → 0
Candidate hypernym: silver lime: large tree native to eastern Europe and Asia Minor having leaves with white tomentum on the under side; widely cultivated as an ornamental → 0
Candidate hypernym: cecum: the cavity in which the large intestine begins and into which the ileum opens → 0
Candidate hypernym: rattlesnake: pit viper with horny segments at the end of the tail that rattle when shaken → 0
Candidate hypernym: quadrivium: (Middle Ages) a higher division of the curriculum in a medieval university involving arithmetic and music and geometry and astronomy → 0