planet : Idioms & Phrases

Index

Acceleration of the planets

  • the increasing velocity of their motion, in proceeding from the apogee to the perigee of their orbits.
Webster 1913

Diurnal revolution of a planet

  • the motion of the planet upon its own axis which constitutes one complete revolution.
Webster 1913

Equator of the sun ∨ of a planet

  • (Astron.), the great circle whose plane passes through through the center of the body, and is perpendicular to its axis of revolution.
Webster 1913

inferior planet

  • noun any of the planets whose orbit lies inside the earth's orbit
WordNet

Interior planets

  • (Astron.), those planets within the orbit of the earth.
Webster 1913

jovian planet

  • noun any of the four outermost planets in the solar system; much larger than Earth and gaseous in nature (like Jupiter)
    gas giant.
WordNet

major planet

  • noun (astronomy) any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected light; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto in order of their proximity to the sun; viewed from the constellation Hercules, all the planets rotate around the sun in a counterclockwise direction
    planet.
WordNet

Medicean planets

  • (Astron.), a name given by Galileo to the satellites of Jupiter.
Webster 1913

minor planet

  • noun any of numerous small celestial bodies that move around the sun
    planetoid.
WordNet

outer planet

  • noun (astronomy) a major planet whose orbit is outside the asteroid belt (Jupiter, Saturn, Uranus, Neptune, Pluto)
WordNet

Planet gear

  • noun an outer gear that revolves about a central sun gear of an epicyclic train
    planet gear; planetary gear; epicyclic gear.
WordNet
  • . (Mach.) See Epicyclic train, under Epicyclic.
Webster 1913

Planet wheel

  • noun an outer gear that revolves about a central sun gear of an epicyclic train
    planet gear; planetary gear; epicyclic gear.
WordNet
  • a gear wheel which revolves around the wheel with which it meshes, in an epicyclic train.
Webster 1913

planet-stricken

Plan"et-strick`en, Plan"et-struck` adjective (Also<
  • Planet-stricken
  • Planet-struck
)
Definitions
  1. Affected by the influence of planets; blasted. Milton.
    Like planet-stricken men of yore He trembles, smitten to the core By strong compunction and remorse. Wordsworth.
Webster 1913

Primary planets

  • . (Astron.) See the Note under Planet.
Webster 1913

red planet

  • noun a small reddish planet that is the 4th from the sun and is periodically visible to the naked eye; minerals rich in iron cover its surface and are responsible for its characteristic color
    Mars.
    • Mars has two satellites
WordNet

Secondary planet

  • . (Astron.) See the Note under Planet.
Webster 1913

Sun and planet wheels

  • (Mach.), an ingenious contrivance for converting reciprocating motion, as that of the working beam of a steam engine, into rotatory motion. It consists of a toothed wheel (called the sun wheel), firmly secured to the shaft it is desired to drive, and another wheel (called the planet wheel) secured to the end of a connecting rod. By the motion of the connecting rod, the planet wheel is made to circulate round the central wheel on the shaft, communicating to this latter a velocity of revolution the double of its own. G. Francis.
Webster 1913

Superior conjunction, Superior planets

  • etc. See Conjunction, Planet, etc.
Webster 1913

superior planet

  • noun any of the planets whose orbit lies outside the earth's orbit
WordNet

terrestrial planet

  • noun a planet having a compact rocky surface like the Earth's; the four innermost planets in the solar system
WordNet