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basement

 - 3 dictionary results

base⋅ment

[beys-muhnt]
–noun
1. a story of a building, partly or wholly underground.
2. (in classical and Renaissance architecture) the portion of a building beneath the principal story, treated as a single compositional unit.
3. the lowermost portion of a structure.
4. the substructure of a columnar or arched construction.

Origin:
1720–30; base 1 + -ment
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To basement
base·ment   (bās'mənt)   
n.  
  1. The substructure or foundation of a building.

  2. The lowest habitable story of a building, usually below ground level.

  3. Geology A complex of undifferentiated igneous and metamorphic rocks underlying sedimentary strata.

  4. Slang The last place or lowest level, as in competitive standings.

  5. Chiefly New England A public toilet, especially one in a school.


[Probably base1 + -ment (perhaps influenced by French soubassement, subfoundation).]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

basement 
"lowest story of a building except the cellar," 1730, from base (n.).
Online Etymology Dictionary, © 2001 Douglas Harper
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