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bedrock

[bed-rok] /ˈbɛdˌrɒk/
noun
1.
Geology. unbroken solid rock, overlaid in most places by soil or rock fragments.
2.
bottom layer; lowest stratum.
3.
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.
4.
the fundamental principles, as of a teaching, belief, or science:
Let's strip away the cant and get down to bedrock.
adjective
5.
basic; fundamental.
Origin
1840-1850
1840-50, Americanism; bed + rock1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for bed-rock

bedrock

/ˈbɛdˌrɒk/
noun
1.
the solid unweathered rock that lies beneath the loose surface deposits of soil, alluvium, etc
2.
basic principles or facts (esp in the phrase get down to bedrock)
3.
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
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Word Origin and History for bed-rock
bedrock
1850, from bed + rock. Figurative use from 1869.
Online Etymology Dictionary, © 2010 Douglas Harper
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bed-rock in Science
bedrock
  (běd'rŏk')   
The solid rock that lies beneath the soil and other loose material on the Earth's surface.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Slang definitions & phrases for bed-rock

bedrock

modifier

: a bedrock discussion/ bedrock decision

noun

The asi facts; the crucial elements; the BOTTOM LINE, the NITTY-GRITTY

[1870s+; fr bedrock ''the solid rock underlying strata and detritus'']


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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6
7
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