galaxy - Dictionary Definition : Vocabulary.com

A galaxy is a collection of stars and planets that are held together by gravity. In a galaxy, the celestial bodies rotate around a central object.

The Earth's galaxy is known as the Milky Way. Our solar system, made up of the Sun and the planets that encircle it, is a tiny part of that galaxy. A galaxy can also refer to a gathering of a lot of sparkly people –– like celebrities or sports stars. What gravity holds this galaxy together? Usually cameras.

PRIMARY MEANINGS OF: galaxy

1	n	(astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust
2	n	tufted evergreen perennial herb having spikes of tiny white flowers and glossy green round to heart-shaped leaves that become coppery to maroon or purplish in fall

FULL DEFINITIONS OF: galaxy

1

n (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust

Synonyms:: extragalactic nebula

Examples:: Magellanic Cloud
either of two small galaxies orbiting the Milky Way; visible near the south celestial pole

Types:: show 4 types...; hide 4 types...; spiral galaxy, spiral nebula
a galaxy having a spiral structure; arms containing younger stars spiral out from old stars at the center; Great Attractor
a massive grouping of galaxies in the direction of Centaurus and Hydra whose gravitational attraction is believed to cause deviations in the paths of other galaxies; Milky Way, Milky Way Galaxy, Milky Way System
the galaxy containing the solar system; consists of millions of stars that can be seen as a diffuse band of light stretching across the night sky; Andromeda galaxy
a spiral galaxy in the constellation of Andromeda that is visible to the naked eye

Type of:: accumulation, aggregation, assemblage, collection
several things grouped together or considered as a whole

n a splendid assemblage (especially of famous people)

Type of:: accumulation, aggregation, assemblage, collection
several things grouped together or considered as a whole

2

n tufted evergreen perennial herb having spikes of tiny white flowers and glossy green round to heart-shaped leaves that become coppery to maroon or purplish in fall

Synonyms:: Galax urceolata, beetleweed, coltsfoot, galax, wandflower

Type of:: herb, herbaceous plant
a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests