from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An optical instrument for measuring crystal angles, as between crystal faces.
- n. A radio receiver and directional antenna used as a system to determine the angular direction of incoming radio signals.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A device used to measure the angles of crystals.
- n. A radio direction finder.
- n. An arthrometer (device for measuring the arc or range of mobility of a joint).
from the GNU version of the Collaborative International Dictionary of English
- n. An instrument for measuring angles, especially the angles of crystals, or the inclination of planes.
from The Century Dictionary and Cyclopedia
- n. An instrument for measuring solid angles, or the inclination of planes, particularly the angles formed by the faces of crystals.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. direction finder that determines the angular direction of incoming radio signals
MN This is a goniometer or instrument for measuring angles; it was a precision instrument, lightweight and easy to transport, and was used at sea to measure distances by angle and the height of heavenly bodies, which permitted the observer to determine his position.
He'd take sightings with compass, goniometer, and plumb bob.
As a measure of the high precision achieved by Siegbahn's spectrographs (which are held at a constant temperature and read, in tenths of seconds, by means of two microscopes mounted diametrically opposite one another on a precision goniometer) may be mentioned the fact that his energy-level values, arrived at thirty years ago, still serve for many purposes.
The refractive power of these yellow stones is remarkable, and the goniometer will probably reveal a higher index than is accorded to all the varieties of beryl by the learned Abbé Haüy.
One day, during an interlude of free flight, he strode into the control-room and glanced at the course-plotting goniometer, then started into the "tank."
An important property of calcite is the great ease with which it may be cleaved in three directions; the three perfect cleavages are parallel to the faces of the primitive rhombohedron, and the angle between them was determined by W.H. Wollaston in 1812, with the aid of his newly invented reflective goniometer, to be 74° 55 '.
Under his right and left hands were the double-series potentiometers actuating the variable-speed drives of the flight-angle directors in the hour and declination ranges; before his eyes was the finely marked micrometer screen upon which the guiding goniometer threw its needle-point of light; powerful optical systems of prisms and lenses revealed to his sight the director-angles, down to fractional seconds of arc.
Mineralogy, the goniometer, the constancy of angles and the primary laws of derivation by Romé de Lisle, and next the discovery of types and the mathematical deduction of secondary forms by Haüy.
There may be a sort of horseback theory of geology; but mineralogy, and the natural sciences generally, must be investigated on foot, hammer or goniometer in hand.
The efficacy endpoints for Ampion™ were pain perception as measured by the WOMAC pain scale and joint movement as measured by a goniometer.