[ souuh r-doh, sou-er- ]
/ ˈsaʊərˌdoʊ, ˈsaʊ ər- /


leaven, especially fermented dough retained from one baking and used, rather than fresh yeast, to start the next.
a prospector or pioneer, especially in Alaska or Canada.
any longtime resident, especially in Alaska or Canada.


leavened with sourdough: sourdough bread.

Origin of sourdough

Middle English word dating back to 1275–1325; see origin at sour, dough Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sourdough

British Dictionary definitions for sourdough

/ (ˈsaʊəˌdəʊ) /


dialect (of bread) made with fermented dough used as a leaven


(in Western US, Canada, and Alaska) an old-time prospector or pioneer
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