Search for: planet
281 Noah Webster’s 1828 Dictionary, p. ORB.10 (Noah Webster)
The ancient astronomers conceived the heavens as consisting of several vast azure transparent orbs or spheres inclosing one another, and including the bodies of the planets.
282 Noah Webster’s 1828 Dictionary, p. ORBIT.2 (Noah Webster)
… a planet or comet; the curve line which a planet describes in its periodical revolution round its central body; as the orbit of Jupiter or Mercury. The orbit …
283 Noah Webster’s 1828 Dictionary, p. ORRERY.1 (Noah Webster)
… the planets in their orbits. This machine was invented by George Graham, but Rowley, a workman, borrowed one from him, and made a copy for the earl of Orrery, after …
284 Noah Webster’s 1828 Dictionary, p. ORTIVE.2 (Noah Webster)
Rising, or eastern. The ortive amplitude of a planet is an arc of the horizon intercepted between the point where a star rises, and the east point of the horizon, the point where the horizon and equator intersect.
285 Noah Webster’s 1828 Dictionary, p. PASS.2 (Noah Webster)
… the planets; it passes from the sun to the earth in about eight minutes.
286 Noah Webster’s 1828 Dictionary, p. PATH.4 (Noah Webster)
3. The way, course or track where a body moves in the atmosphere or in space; as the path of a planet or comet; the path of a meteor.
287 Noah Webster’s 1828 Dictionary, p. PERIHELION.1 (Noah Webster)
PERIHELION, PERIHELIUM, n. [Gr. about, and the sun.] That part of the orbit of a planet or comet, in which it is at its least distance from the sun; opposed to aphelion.
288 Noah Webster’s 1828 Dictionary, p. PERIOD.2 (Noah Webster)
… a planet in making its revolution round the sun, or the duration of its course till it returns to the point of its orbit where it began. Thus the period of the …
289 Noah Webster’s 1828 Dictionary, p. PERIODIC.2 (Noah Webster)
1. Performed in a circuit, or in a regular revolution in a certain time, or in a series of successive circuits; as the periodical motion of the planets round the sun; the periodical motion of the moon round the earth.
290 Noah Webster’s 1828 Dictionary, p. PHASE.2 (Noah Webster)
1. In a general sense, an appearance; that which is exhibited to the eye; appropriately, any appearance or quantity of illumination of the moon or other planet. The moon presents different phases at the full and the quadratures.
291 Noah Webster’s 1828 Dictionary, p. PLANE.2 (Noah Webster)
1. In astronomy, an imaginary surface supposed to pass through any of the curves described on the celestial sphere; as the plane of the ecliptic; the plane of a planet’s orbit; the plane of a great circle.
292 Noah Webster’s 1828 Dictionary, p. PLANET.1 (Noah Webster)
… planet as its center. The planets which revolve about the sun as their center, are called primary planets; those which revolve about other planets as …
293 Noah Webster’s 1828 Dictionary, p. PLANETARIUM.1 (Noah Webster)
PLANETARIUM, n. An astronomical machine which, by the movement of its parts, represents the motions and orbits of the planets, agreeable to the Copernican system.
294 Noah Webster’s 1828 Dictionary, p. PLANETARY.1 (Noah Webster)
PLANETARY, a. Pertaining to the planets; as planetary inhabitants; planetary motions.
295 Noah Webster’s 1828 Dictionary, p. PLANETARY.2 (Noah Webster)
1. Consisting of planets; as a planetary system.
296 Noah Webster’s 1828 Dictionary, p. PLANETARY.3 (Noah Webster)
2. Under the dominion or influence of a planet; as a planetary hour. [Astrology.]
297 Noah Webster’s 1828 Dictionary, p. PLANETARY.4 (Noah Webster)
3. Produced by planets; as planetary plague or influence.
298 Noah Webster’s 1828 Dictionary, p. PLANETARY.5 (Noah Webster)
4. Having the nature of a planet; erratic or revolving.
299 Noah Webster’s 1828 Dictionary, p. PLANETARY.6 (Noah Webster)
Planetary days, the days of the week as shared among the planets, each having its day, as we name the days of the week after the planets.
300 Noah Webster’s 1828 Dictionary, p. PLANETED.1 (Noah Webster)
PLANETED, a. Belonging to planets.