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astroglia | astrognosy | astrogony | astrography | astroite | astrolabe | astrolater | astrolatry | astrolithology | astrologer | astrologian

astrolabe

 : 
Noun
 : 
as=tro=labe

CIDE DICTIONARY

astrolaben. [OE. astrolabie, astrilabe, OF. astrelabe, F. astrolabe, LL. astrolabium, fr. Gr. 'astrola`bon; 'a`stron star + , , to take.].
  •  An instrument for observing or showing the positions of the stars. It is now disused.  [1913 Webster]
    " Among the ancients, it was essentially the armillary sphere. A graduated circle with sights, for taking altitudes at sea, was called an astrolabe in the 18th century. It is now superseded by the quadrant and sextant."  [1913 Webster]
  •  A stereographic projection of the sphere on the plane of a great circle, as the equator, or a meridian; a planisphere.  Whewell.  [1913 Webster]

OXFORD DICTIONARY

astrolabe, n. an instrument, usu. consisting of a disc and pointer, formerly used to make astronomical measurements, esp. of the altitudes of celestial bodies, and as an aid in navigation.

Etymology
ME f. OF astrelabe f. med.L astrolabium f. Gk astrolabon, neut. of astrolabos star-taking

ROGET THESAURUS

astrolabe

Measurement

N measurement, admeasurement, mensuration, survey, valuation, appraisement, assessment, assize, estimate, estimation, dead reckoning, reckoning, gauging, horse power, metrology, weights and measures, compound arithmetic, measure, yard measure, standard, rule, foot rule, compass, calipers, gage, gauge, meter, line, rod, check, dividers, velo, flood mark, high water mark, Plimsoll line, index, scale, graduation, graduated scale, nonius, vernier, bathometer, galvanometer, heliometer, interferometer, odometer, ombrometer, pantometer, pluviometer, pneumatometer, pneumometer, radiometer, refractometer, respirometer, rheometer, spirometer, telemeter, udometer, vacuometer, variometer, viameter, thermometer, thermistor (heat) &c, barometer (air), anemometer (wind), dynamometer, goniometer, (angle) 244 meter, landmark, balance, scale, marigraph, pneumatograph, stethograph, rain gauge, rain gage, voltmeter (volts), ammeter (amps), spectrophotometer (light absorbance), mass spectrophotometer (molecular mass), geiger counter, scintillation counter (radioactivity), pycnometer (liquid density), graduated cylinder, volumetric flask (volume), radar gun (velocity), radar (distance), side-looking radar, (shape, topography), sonar (depth in water), light meter (light intensity), clock, watch, stopwatch, chronometer (time), anemometer (wind velocity), densitometer (color intensity), measurability, computability, determinability, coordinates, ordinate and abscissa, polar coordinates, latitude and longitude, declination and right ascension, altitude and azimuth, geometry, stereometry, hypsometry, metage, surveying, land surveying, geodesy, geodetics, geodesia, orthometry, altimetry, cadastre, astrolabe, armillary sphere, land surveyor, geometer, measuring, metric, metrical, measurable, perceptible, noticeable, detectable, appreciable, ponderable, determinable, fathomable, geodetical, topographic, topographical, cartographic, cartographical.


For further exploring for "astrolabe" in Webster Dictionary Online


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