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check; as, to mask a body of troops or a fortess by a superior force, while some hostile evolution is being carried out.

stance (of a planet from the sun) (Astron.), the average of the distances throughout one revolution of the planet, equivalent to the semi-major axis of the orbit. -- Mean error (Math. Phys.), the average error of a number of observations found by taking the mean value of the positive and negative errors without regard…

Recurring once a month; monthly; gone through in a month; as, the menstrual revolution of the moon; pertaining to monthly changes; as, the menstrual equation of the sun's place.

ike bellows and measure the gas by filling and emptying. -- W, a gas meter in which the revolution of a chambered drum in water measures the gas passing through it.

To cause to be like the Mexicans, or their country, esp. in respect of frequent revolutions of government.

ng their line of section by a screw, and distances are determined by the number of screw revolutions necessary to bring the points to be measured into optical coincidence. When the two images are formed by a bisected objects glass, it is called a divided-object-glass micrometer, and when the instrument is large and equ…

tiaman who was to be ready to march at a moment's notice; -- a term used in the American Revolution.

, or Monseigneur the Archibishop. It was given, specifically, to the dauphin, before the Revolution of

is divided; the twelfth part of a year, corresponding nearly to the length of a synodic revolution of the moon, -- whence the name. In popular use, a period of four weeks is often called a month.

Continued a month, or a performed in a month; as, the monthly revolution of the moon.

The time occupied by the moon in making one revolution in her orbit; a month. Shak.

History of the evolution of forms; that part of ontogeny that deals with the germ history of forms; -- distinguished from physiogeny. Haeckel.

uard, a body of militia, or a local military organization, as in Paris during the French Revolution, or as certain bodies of militia in other European countries and in the United States. -- National salute, a salute consisting of as many guns as there are States in the Union. [U.S.]

eory which holds natural selection, as explained by Darwin, to be the chief factor in the evolution of plants and animals, and denies the inheritance of acquired characters; -- esp. opposed to Neo-Lamarckism. Weismannism is an example of extreme Neo- Darwinism. -- Ne`o-Dar*win"i*an, a. & n.

23, 1846. Its mean distance from the sun is about 2,775,000,000 miles, and its period of revolution is about 164,78 years. Neptune powder, an explosive containing nitroglycerin, -- used in blasting. -- Neptune's cup (Zoöl.), a very large, cup-shaped, marine sponge (Thalassema Neptuni).

Of or pertaining to the nodes; from a node to the same node again; as, the nodical revolutions of the moon. Nodical month. See Lunar month, under Month.

ed to take the oath of allegiance to William and Mary, or to their successors, after the revolution of 1688; a Jacobite.

One of a number of persons, before the revolution of 1789, chiefly of the higher orders, appointed by the king to constitute a representative body.

ic orders. See Oblate, n. Oblate ellipsoid or spheroid (Geom.), a solid generated by the revolution of an ellipse about its minor axis; an oblatum. See Ellipsoid of revolution, under Ellipsoid.

An oblate spheroid; a figure described by the revolution of an ellipse about its minor axis. Cf. Oblongum.