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The aspect of planets when separated the fifth part of the zodiac, or 72º. Hutton.

body with that of a body describing an orbit around it, as a line joining the sun and a planet or comet, or a planet and its satellite.

An inclined plane serving as a communication between different interior levels.

continuous wagon vault, or cradle vault, whose two abutments are located on an inclined planed plane, such as the vault supporting a stairway, or forming the ceiling of a stairway.

odus (Law), an excessive and unreasonable modus. See Modus, 3. -- To set (the iron of a plane, etc.) rank, to set so as to take off a thick shaving. Moxon.

The angle which the plane of the dial makes with a vertical plane which it intersects in a horizontal line. Brande & C.

Recumbent. Reclining dial, a dial whose plane is inclined to the vertical line through its center. Davies & Peck (Math. Dict.).

ring angless, like the sextant or Hadley's quadrant, by the reflection of light from two plane mirrors which it carries, and differing from the sextant chiefly in having an entire circle. -- Reflecting galvanometer, a galvanometer in which the deflections of the needle are read by means of a mirror attached to it, whi…

To go back; to retrograde, as the apsis of a planet's orbit. [R.] Todhunter.

Same as Isometric. Regular polygon (Geom.), a plane polygon which is both equilateral and equiangular. -- Regular polyhedron (Geom.), a polyhedron whose faces are equal regular polygons. There are five regular polyhedrons, -- the tetrahedron, the hexahedron, or cube, the octahedron, the dodecahedron, and the icosahedr…

The projection of a figure above the ground or plane on wwhich it is formed.

The removal of an edge or an angle by one or more planes.

trained; as, a painting may want repose. Angle of repose (Physics), the inclination of a plane at which a body placed on the plane would remain at rest, or if in motion would roll or side down with uniform velocity; the angle at which the various kinds of earth will stand when abandoned to themselves.…

To relieve for a time, or temporarily. Company, thought it may reprieve a man from his melaneholy yet can not secure him from his conscience. South.

et of white or colored lines seems to meet and interlace with another set in a different plane. -- Reticulated micrometer, a micrometer for an optical instrument, consisting of a reticule in the focus of an eyepiece. -- Reticulated work (Masonry), work constructed with diamond-shaped stones, or square stones placed d…

backward, and contrary to the succession of the signs, that is, from east to west, as a planet. Hutton. And if he be in the west side in that condition, then is he retrograde. Chaucer.

The motion of any body, as a planet or satellite, in a curved line or orbit, until it returns to the same point again, or to a point relatively the same; -- designated as the annual, anomalistic, nodical, sidereal, or tropical revolution, according as the point of return or completion has a fixed relation to the year,…

To move in a curved path round a center; as, the planets revolve round the sun.

at other faces, two reflections. It is used to produce a ray circularly polarized from a plane-polarized ray, or the reverse. Nichol.

C. (b) (Spherics) A spherical angle included between the axes of two great circles whose planes are perpendicular to each other. -- Right ascension. See under Ascension. -- Right Center (Politics), those members belonging to the Center in a legislative assembly who have sympathies with the Right on political question…