- Geology. unbroken solid rock, overlaid in most places by soil or rock fragments.
- bottom layer; lowest stratum.
- any firm foundation or basis: Technical courses will be founded on a bedrock of sound, general education so as to produce a well-rounded engineer.
- the fundamental principles, as of a teaching, belief, or science: Let's strip away the cant and get down to bedrock.
- basic; fundamental.
Origin of bedrock
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for bedrock
So we know that boring down to the bedrock and pumping it full of fluid can cause earthquakes.26 Earthquakes Later, Fracking’s Smoking Gun Is in Texas
January 7, 2015
“To minimize sprawl” has become a bedrock catchphrase of the core political ideology.The Progressives’ War on Suburbia
November 16, 2014
Freedom will seep into the bedrock as we rediscover our backbone.Market Leninism vs. the West
March 30, 2014
“We know more about Bedrock than we do about most other vineyards on account of the people who owned it,” Peterson explained.The Pleasures of America’s Oldest Vines
February 22, 2014
The Constitution of the United States has been the bedrock upon which our country was built over the past 225 years.The ‘Defining Issue of Our Time’ Is Obama’s Constitutional Excesses
January 9, 2014
Such a belief was indeed the bedrock of mediaeval political thought.Progress and History
All superficial accumulations were swept away, and the bedrock was exposed.A Tramp Abroad, Complete
Mark Twain (Samuel Clemens)
The bedrock on which they fought was slippery where ice had formed in the crevices.A Man to His Mate
J. Allan Dunn
Here was always the reminder of that bedrock principle of his thought.Ruskin Relics
W. G. Collingwood
He is going, said Old Mole, to discover the bedrock of life and live on it.Old Mole
- the solid unweathered rock that lies beneath the loose surface deposits of soil, alluvium, etc
- basic principles or facts (esp in the phrase get down to bedrock)
- the lowest point, level, or layer
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
Word Origin and History for bedrock
Online Etymology Dictionary, © 2010 Douglas Harper
- The solid rock that lies beneath the soil and other loose material on the Earth's surface.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.