Definition of galaxy Galaxy

/gæˈlʌksi/ - [gatluksee] - gal•ax•y

We found 11 definitions of galaxy from 7 different sources.

What does galaxy mean?

WordNet

Noun Plural: galaxies
galaxy - (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust; "`extragalactic nebula' is a former name for `galaxy'"
		extragalactic nebula
		aggregation, accumulation, assemblage, collection the act of accumulating
		macrocosm, cosmos, existence, universe, creation, world any of various mostly Mexican herbs of the genus Cosmos having radiate heads of variously colored flowers and pinnate leaves; popular fall-blooming annuals
		astronomy, uranology the branch of physics that studies celestial bodies and the universe as a whole
		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
		star (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior
galaxy - a splendid assemblage (especially of famous people)
galaxy - 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
		galax, wandflower, beetleweed, coltsfoot, Galax urceolata
		herbaceous plant, herb aromatic potherb used in cookery for its savory qualities

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Webster DictionaryWebster's Unabridged Dictionary 📘

galaxy (n.)
The Milky Way; that luminous tract, or belt, which is seen at night stretching across the heavens, and which is composed of innumerable stars, so distant and blended as to be distinguishable only with the telescope. The term has recently been used for remote clusters of stars.
galaxy (n.)
A splendid assemblage of persons or things.

OmegaWiki DictionaryOmegaWiki Dictionary Ω

galaxy
A huge gravitationally bound system of relatively close stars.
galaxy
Spiral galaxy in which the Solar System is located.

Chambers DictionaryChamber's 20th Century Dictionary 📕

galaxy
gal′ak-si, n. the Milky-Way, or the luminous band of stars stretching across the heavens: any splendid assemblage. [Through Fr. and L., from Gr. galaxias—gala, milk.]

Sailor's Word-BookThe Sailor's Word-Book ⛵

galaxy
A name of the Milky Way. (See VIA LACTEA.)

Wikipedia

"For the automobile, see Ford Galaxy."

A galaxy is a group of many stars including gas, dust, and dark matter. Gravity holds galaxies together. Everything in a galaxy moves around a centre. The name galaxy is taken from the Greek word "Galaxia" meaning milky, a reference to the our own galaxy, the Milky Way.

There are three main types of galaxies: ellipticals, spirals, and irregulars. All Galaxies exist inside the universe. There are an estimated one hundred billion galaxies within distance we can see or the Observable Universe. Each galaxy contains roughly one hundred thousand to one trillion stars. This makes the number of stars in the Universe more than every grain of sand on every beach on Earth.

We can describe galaxies by the number of stars they have. The galaxy we call the Small Magellanic Cloud has about one billion stars in it. This is a small galaxy in comparison to most, but it isn't the smallest: Leo I and Leo II have about 1 million stars in them, and the Draco System has "only" a few hundred thousand stars. Astronomers call these galaxies "dwarf galaxies."

In general, smaller groups are called "star clusters," not galaxies (a "cluster" is a group of something, like a cluster of grapes.) The largest star cluster, a globular cluster called Messier 15 has about 6 million stars, so we see that for small galaxies, there is a blurring together of what we mean by a galaxy and a large star cluster.

In addition to their mass and numbers of stars, a galaxy is a collectio

Part of speech

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galaxy, noun, singular of galaxies.

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Sign Language

galaxy in sign language