fourth quadrant

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• 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

• quadrant — [kwä′drənt] n. [ME < L quadrans, fourth part < quadrare: see QUADRATE] 1. a fourth part of the circumference of a circle; an arc of 90° 2. a quarter section of a circle 3. any piece or part shaped like a quarter section of a circle 4. an… …   English World dictionary

• quadrant — (n.) late 14c., a quarter of a day, six hours, from L. quadrantem (nom. quadrans) fourth part, noun use of prp. of quadrare to make square, from quadrus a square, from quattuor four (see FOUR (Cf. four)). The surveying instrument is first so… …   Etymology dictionary

• 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 — i. A quarter portion of a circle, centered on a NAVAID (navigational aid), oriented clockwise from magnetic north. The divisions of the circle are as follows: NE quadrant from 000° to 089°, SE quadrant from 090° to 179°, SW quadrant from 180° to… …   Aviation dictionary

• 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

• quadrant — quad•rant [[t]ˈkwɒd rənt[/t]] n. 1) math. a quarter of a circle; an arc of 90° 2) math. the area included between such an arc and two radii drawn one to each extremity 3) mac something shaped like a quarter of a circle, as a part of a machine 4)… …   From formal English to slang