[koz-muhs, -mohs]
noun, plural cosmos, cosmoses for 2, 4.
the world or universe regarded as an orderly, harmonious system.
a complete, orderly, harmonious system.
order; harmony.
any composite plant of the genus Cosmos, of tropical America, some species of which, as C. bipannatus and C. sulphureus, are cultivated for their showy ray flowers.
Also, Kosmos. (initial capital letter) Aerospace. one of a long series of Soviet satellites that have been launched into orbit around the earth.

1150–1200; Middle English < Greek kósmos order, form, arrangement, the world or universe Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cosmos (ˈkɒzmɒs)
n , -mos, -moses
1.  the world or universe considered as an ordered system
2.  any ordered system
3.  harmony; order
4.  any tropical American plant of the genus Cosmos, cultivated as garden plants for their brightly coloured flowers: family Asteraceae (composites)
[C17: from Greek kosmos order, world, universe]

Cosmos (ˈkɒzmɒs)
astronautics any of various types of Soviet satellite, including Cosmos 1 (launched 1962) and nearly 2000 subsequent satellites

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

c.1200 (but not popular until 1848, as a translation of Humboldt's Kosmos), from Gk. kosmos "order, good order, orderly arrangement" (cf. Homeric kosmeo, used of the act of marshaling troops), with an important secondary sense of "ornaments of a woman's dress, decoration" (cf. kosmokomes "dressing the
hair"), also "the universe, the world." Pythagoras is said to have been the first to apply this word to "the universe," perhaps originally meaning "the starry firmament," but later it was extended to the whole physical world, including the earth. For specific reference to "the world of people," the classical phrase was he oikoumene (ge) "the inhabited (earth)." Septuagint uses both kosmos and oikoumene. Kosmos also was used in Christian religious writing with a sense of "worldly life, this world (as opposed to the afterlife)," but the more frequent word for this was aion, lit. "lifetime, age."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
cosmos   (kŏz'məs, kŏz'mōs')  Pronunciation Key 
The universe, especially when considered as an orderly and harmonious whole.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Despite the setbacks, spacecraft continue to probe the solar system and plumb
  the cosmos.
He was blinded by the sheer glory of the new cosmos that was unveiled by
  science during the first two decades of his life.
Astronomy is certainly a science and the methods used to study the cosmos are
  absolutely experimental in design.
His cosmos is stocked with the usual emotions, but they come in the form of
Images for cosmos
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