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sourdough

 - 3 dictionary results

sour⋅dough

[souuhr-doh, sou-er-]
–noun
1. leaven, esp. fermented dough retained from one baking and used, rather than fresh yeast, to start the next.
2. a prospector or pioneer, esp. in Alaska or Canada.
3. any longtime resident, esp. in Alaska or Canada.
–adjective
4. leavened with sourdough: sourdough bread.

Origin:
1275–1325; ME; see sour, dough
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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sour·dough   (sour'dō')   
n.  
  1. Sour fermented dough used as leaven in making bread.

  2. An early settler or prospector, especially in Alaska and northwest Canada.


[Sense 2, from an association with using pieces of sourdough to leaven bread in the winter.]
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

sourdough 
1303, "fermented dough," from sour + dough. The meaning "Arctic prospector or pioneer" is from 1898 Yukon gold rush, from the practice of saving a lump of fermented dough as leaven for raising bread baked during the winter.
Online Etymology Dictionary, © 2001 Douglas Harper
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