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English definition of “bedrock”

bedrock

noun (BASE)    /ˈbed.rɒk/ US  /-rɑːk/
[S] the main principles on which something is based: Some people believe that the family is the bedrock of society.Being based on or depending on something
(Definition of bedrock noun (BASE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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