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n. One eighth of a circle.

n. A 45° arc.

n. The area enclosed by two radii at a 45° angle and the intersected arc.

n. An instrument based on the principle of the sextant but employing only a 45° angle, used as an aid in navigation.

n. Astronomy The position of a celestial body when it is separated from another by a 45° angle.

n. One of eight parts into which three-dimensional space is divided by three usually perpendicular coordinate planes.

n. The eighth part of a circle; an arc of 45 degrees.

n. : The eighth part of a disc; a sector of 45 degrees; half a quadrant.

n. : An instrument for measuring angles, particularly of elevation.

n. The eighth part of a circle; an arc of 45 degrees.

n. The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction, or opposition, and quadrature, or distant from another body 45 degrees.

n. An instrument for measuring angles (generally called a quadrant), having an arc which measures up to 9O°, but being itself the eighth part of a circle. Cf. Sextant.

n. One of the eight parts into which a space is divided by three coördinate planes.

n. The eighth part of a circle.

n. In astronomy, that position or aspect of two heavenly bodies, especially a planet and the sun, when half-way between conjunction or opposition and quadrature, or distant from one another by the eighth part of a circle, or 45°.

n. An instrument used by seamen for measuring angles, resembling a sextant or quadrant in principle, but having an arc the eighth part of a circle, or 45°. By double reflection it can measure an arc of 90°. See sextant. Hadley's quadrant is really an octant.

n. Each of the eight regions into which space is divided by three copunctal non-costraight planes.

n. a measuring instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration

"John Paul’s deliverance from the hardship of the lower deck was a brass instrument called an octant."

measuring device    measuring instrument    measuring system   

sextant    quadrant   

quadrant    sextant   

5-mhz    hotpressed    61st    demy    vigesimo    locked-room    capitulo    arpeggios    rima    nullspace