cos(redirected from cos lettuces)
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Related to cos lettuces: butterhead lettuce
cos 1(kôs, kŏs)
[After Cos (Kos).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Plants) a variety of lettuce with a long slender head and crisp leaves. Usual US and Canadian name: romaine Compare cabbage lettuce
[C17: named after Kos, the Aegean island of its origin]
(Placename) a variant spelling of Kos
(Military) Chief of Staff
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
[1690–1700; after Kos, where it originated]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Abbreviation of cosine
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||cos - ratio of the adjacent side to the hypotenuse of a right-angled triangle|
|2.||cos - lettuce with long dark-green leaves in a loosely packed elongated head|
lettuce - leaves of any of various plants of Lactuca sativa
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