(for measuring altitudes)

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• Distance measuring equipment — D VOR/DME ground station DME by itself Distance measuring equipment (DME) is a t …   Wikipedia

• Gunner's quadrant — Quadrant Quad rant, n. [L. quadrans, antis, a fourth part, a fourth of a whole, fr. quattuor four: cf. F. quadrant, cadran. See {Four}, and cf. {Cadrans}.] 1. The fourth part; the quarter. [Obs.] Sir T. Browne. [1913 Webster] 2. (Geom.) The… …   The Collaborative International Dictionary of English

• Gunter's quadrant — Quadrant Quad rant, n. [L. quadrans, antis, a fourth part, a fourth of a whole, fr. quattuor four: cf. F. quadrant, cadran. See {Four}, and cf. {Cadrans}.] 1. The fourth part; the quarter. [Obs.] Sir T. Browne. [1913 Webster] 2. (Geom.) The… …   The Collaborative International Dictionary of English

• Hadley's quadrant — Quadrant Quad rant, n. [L. quadrans, antis, a fourth part, a fourth of a whole, fr. quattuor four: cf. F. quadrant, cadran. See {Four}, and cf. {Cadrans}.] 1. The fourth part; the quarter. [Obs.] Sir T. Browne. [1913 Webster] 2. (Geom.) The… …   The Collaborative International Dictionary of English

• Quadrant — Quad rant, n. [L. quadrans, antis, a fourth part, a fourth of a whole, fr. quattuor four: cf. F. quadrant, cadran. See {Four}, and cf. {Cadrans}.] 1. The fourth part; the quarter. [Obs.] Sir T. Browne. [1913 Webster] 2. (Geom.) The quarter of a… …   The Collaborative International Dictionary of English

• Quadrant of altitude — Quadrant Quad rant, n. [L. quadrans, antis, a fourth part, a fourth of a whole, fr. quattuor four: cf. F. quadrant, cadran. See {Four}, and cf. {Cadrans}.] 1. The fourth part; the quarter. [Obs.] Sir T. Browne. [1913 Webster] 2. (Geom.) The… …   The Collaborative International Dictionary of English

• Ferdinand Verbiest — [ (Detail of engraving from French book about Chinese empire, published 1736) [ [http://content.wsulibs.wsu.edu/u?/mexico,18 Details of original engraving in Washington State University collection] ] ] Father Ferdinand Verbiest (October 9 1623 –… …   Wikipedia

• quadrant — noun Etymology: Middle English, from Latin quadrant , quadrans fourth part; akin to Latin quattuor four more at four Date: 15th century 1. a. an instrument for measuring altitudes consisting commonly of a graduated arc of 90 degrees with an index …   New Collegiate Dictionary

• quadrant — quadrantal /kwo dran tl/, adj. quadrantlike, adj. /kwod reuhnt/, n. 1. a quarter of a circle; an arc of 90°. 2. the area included between such an arc and two radii drawn one to each extremity. 3. something shaped like a quarter of a circle, as a… …   Universalium

• astrolabe — as·tro·labe || æstrəʊleɪb n. instrument used for measuring altitudes (Astronomy, Navigation) …   English contemporary dictionary

• astrolabes — as·tro·labe || æstrəʊleɪb n. instrument used for measuring altitudes (Astronomy, Navigation) …   English contemporary dictionary