heliometer

• POS: Noun
• HYPHEN: he=li=om=e=ter

CIDE DICTIONARY

heliometer, n. [Helio- + -meter: cf. F. héliomètre.].

 An instrument devised originally for measuring the diameter of the sun; now employed for delicate measurements of the distance and relative direction of two stars too far apart to be easily measured in the field of view of an ordinary telescope.

OXFORD DICTIONARY

heliometer, n. an instrument used for finding the angular distance between two stars (orig. used for measuring the diameter of the sun).

ROGET THESAURUS

heliometer

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.