quadrant angles

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• quadrant — ► NOUN 1) each of four parts of a circle, plane, body, etc. divided by two lines or planes at right angles. 2) historical an instrument for taking angular measurements of altitude in astronomy and navigation. ORIGIN Latin quadrans quarter , from… …   English terms dictionary

• Quadrant (instrument) — Ptolemy using a quadrant A quadrant is an instrument that is used to measure angles up to 90°. It was originally proposed by Ptolemy as a better kind of astrolabe.[1] Several different variations of the instrument were later produced by medieval… …   Wikipedia

• Quadrant (instrument) — Pour les articles homonymes, voir Quadrant. Le quadrant mobile d Augustin Stark (1815). Le quadrant est un ancien instrument de navigation qui servait à faire le point sur sa position en …   Wikipédia en Français

• Quadrant — A quarter. For example, the liver is in the right upper quadrant of the abdomen. * * * One quarter of a circle. In anatomy, roughly circular areas are divided for descriptive purposes into quadrants. The abdomen is divided into right upper and… …   Medical 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 — Octant Oc tant, n. [L. octans, antis. fr. octo eight. See {Octave}.] 1. (Geom.) The eighth part of a circle; an arc of 45 degrees. [1913 Webster] 2. (Astron. & Astrol.) The position or aspect of a heavenly body, as the moon or a planet, when half …   The Collaborative International Dictionary of English

• quadrant — noun technical 1》 each of four parts of a circle, plane, body, etc. divided by two lines or planes at right angles. 2》 historical an instrument for taking angular measurements, consisting of a graduated quarter circle and a sighting mechanism. 3》 …   English new terms dictionary

• quadrant — quad|rant [ˈkwɔdrənt US ˈkwa: ] n [Date: 1300 1400; : Latin; Origin: quadrans fourth part ] 1.) a quarter of a circle 2.) an instrument for measuring angles, used when sailing or looking at the stars …   Dictionary of contemporary English

• quadrant — noun (C) 1 a quarter of a circle 2 an instrument for measuring angles, used when sailing or when looking at the stars …   Longman dictionary of contemporary English

• quadrant — n. 1 a quarter of a circle s circumference. 2 a plane figure enclosed by two radii of a circle at right angles and the arc cut off by them. 3 a quarter of a sphere etc. 4 a a thing, esp. a graduated strip of metal, shaped like a quarter circle. b …   Useful english dictionary

• Parallax Propeller — chip The Parallax P8X32A Propeller chip, introduced in 2006, is a multi core architecture parallel microcontroller with eight 32 bit RISC CPU cores.[1] …   Wikipedia