英语词汇“planetesimals”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

planet /planˈit/

noun

Any of the large celestial bodies that revolve about the sun reflecting the sun's light and generating no heat or light of their own, these being Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune

A satellite of a planet (secondary planet)

An astrological influence vaguely conceived

(in old astronomy) a heavenly body whose place among the fixed stars is not fixed (including sun and moon)

ORIGIN: Fr planète, from Gr planētēs wanderer, from planaein to make to wander

planetāˈrium noun (pl planetāˈria)

A machine showing the motions and orbits of the planets, often by the projecting of their images onto a (domed) ceiling

A hall or building containing such a machine

planˈetary adjective

Relating to the planets or a planet, or this planet

Consisting of or produced by planets

Under the influence of a planet (astrology)

Erratic

Revolving in an orbit

planetesˈimal noun

In one theory of the origin of the solar system, any of many very small units absorbed into the planets as these formed

planetic /plən-etˈik/ or planetˈical adjective

planˈetoid noun

An asteroid
An artificial body put into orbit

planetoiˈdal adjective

planetolˈogist noun

planetolˈogy noun

The science of the planets

planetary gear noun

A gearwheel that travels around a central gearwheel

planetary nebula noun

A ring-shaped nebula around a star, consisting of a shell of gas, illuminated by the star's short-wave radiation

planˈet-strickˈen or planˈet-struck adjective (astrology)

Affected by the influence of the planets, esp adversely
Blasted

inferior planets

The planets within the earth's orbit (Mercury and Venus)

minor planet

A rocky object that orbits the sun but is smaller than a planet

on another planet (informal)

Not in touch with reality

superior planets

The planets outside the earth's orbit