[ kos, kaws ]


Origin of cos

1690–1700; after Kos, where it originated

Words Nearby cos

Other definitions for cos (2 of 4)


  1. Trigonometry, Mathematics. cosine.

Other definitions for cos. (3 of 4)


  1. companies.

  2. consul.

  1. consulship.

  2. counties.

Other definitions for C.O.S. (4 of 4)


  1. cash on shipment. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use cos in a sentence

  • "Burn a Bush cos' for peace he no push no button," he said during an HBO Def Poetry appearance in 2007.

    The Rap on the White House | Daniel Stone | May 11, 2011 | THE DAILY BEAST
  • She is a director of the Estee Lauder cos. and The Economist Newspaper Ltd.

    I Told You So | Lynn Forester De Rothschild | February 28, 2010 | THE DAILY BEAST
  • No good sayin' he's out of town, ma'am, or even spendin' the day on the river, 'cos he ain't.

    Happy House | Betsey Riddle, Freifrau von Hutten zum Stolzenberg
  • "'cos why, you don't shout loud enuff," explained the bigger girl.

    Little Pollie | Gertrude P. Dyer
  • An' fine cigar cos' five cent each, an' mak' on Trois-Rivières!

    Humour of the North | Lawrence J. Burpee
  • His colleague, Herophilos, was quite as distinguished as Erasistratos and owed his training to the rival school of cos.

  • Uv cos ye kin buy hosses ef ye got money but ye can't buy peepul.

    Watch Yourself Go By | Al. G. Field

British Dictionary definitions for cos (1 of 4)


cos lettuce

/ (kɒs) /

  1. a variety of lettuce with a long slender head and crisp leaves: Usual US and Canadian name: romaine Compare cabbage lettuce

Origin of cos

C17: named after Kos, the Aegean island of its origin

British Dictionary definitions for cos (2 of 4)


/ (kɒz) /

abbreviation for
  1. cosine

British Dictionary definitions for Cos (3 of 4)


/ (kɒs) /

  1. a variant spelling of Kos

British Dictionary definitions for COS (4 of 4)


abbreviation for
  1. Chief of Staff

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for cos


  1. Abbreviation of cosine

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.