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e or distance along the longest line; -- distinguished from breadth or thickness; as, the longitude of a room; rare now, except in a humorous sense. Sir H. Wotton. The longitude of their cloaks. Sir. W. Scott. Mine [shadow] spindling into longitude immense. Cowper.

ded to keep time with great accuracy for use an astronomical observations, in determining longitude, etc.

commutation of rations. Angle of commutation (Astron.), the difference of the geocentric longitudes of the sun and a planet. -- Commutation of tithes, the substitution of a regular payment, chargeable to the land, for the annual tithes in kind. -- Commutation ticket, a ticket, as for transportation, which is the evi…

To turn away from the west; to throw out of reckoning as to longitude. [Obs.] Marvell.

The date at which a planet or comet has a longitude or position.

m the earth, -- usually opposed to heliocentric, as seen from the sun; as, the geocentric longitude or latitude of a planet.

graphy treats of the earth as a planet, of its shape, its size, its lines of latitude and longitude, its zones, and the phenomena due to to the earth's diurnal and annual motions. -- Physical geography treats of the conformation of the earth's surface, of the distribution of land and water, of minerals, plants, animal…

eocentrical. Heliocentric parallax. See under Parallax. -- Heliocentric place, latitude, longitude, etc. (of a heavenly body), the direction, latitude, longitude, etc., of the body as viewed from the sun.

Karroo, or The Karroo, a vast plateau, in Cape Colony, stretching through five degrees of longitude, at an elevation of about 3,000 feet.

ves different names according to the manner in which it takes place; as: (a) Libration in longitude, that which, depending on the place of the moon in its elliptic orbit, causes small portions near the eastern and western borders alternately to appear and disappear each month.

A circle of latitude or of longitude, as represented on a map.

Of or pertaining to longitude or length; as, longitudinal distance.

angular distance of the moon from the sun, a star, or a planet, employed for determining longitude by the lunar method. -- Lunar method, the method of finding a ship's longitude by comparing the local time of taking (by means of a sextant or circle) a given lunar distance, with the Greenwich time corresponding to the…

An instrument for determining longitude by observation of the stars.

le to be observed in connection with the moon at culmination, for determining terrestrial longitude.

As seen from Neptune, or having Neptune as a center; as, Neptunicentric longitude or force.

avens directly opposite to it; especially, the position of a planet or satellite when its longitude differs from that of the sun 180º; -- signified by the symbol as, .

y body; -- usually defined by its right ascension and declination, or by its latitude and longitude. Place of arms (Mil.), a place calculated for the rendezvous of men in arms, etc., as a fort which affords a safe retreat for hospitals, magazines, etc. Wilhelm. -- High place (Script.), a mount on which sacrifices were…

elf, as a triangle, a pyramid, etc. -- Prime meridian (Astron.), the meridian from which longitude is reckoned, as the meridian of Greenwich or Washington. -- Prime minister, the responsible head of a ministry or executive government; applied particularly to that of England. -- Prime mover. (Mech.) (a) A natural age…

s with their distance from the equator, so that at all places the degrees of latitude and longitude have to each other the same ratio as on the sphere itself. -- Oblique projection, a projection made by parallel lines drawn from every point of a figure and meeting the plane of projection obliquely. -- Polar projectio…