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Definition of cornerstone noun from the Oxford Advanced Learner's Dictionary

cornerstone

noun
 
/ˈkɔːnəstəʊn/
 
/ˈkɔːrnərstəʊn/
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  1. a stone at the corner of the base of a building, often laid in a special ceremony
  2. the most important part of something that the rest depends on
    • This study is the cornerstone of the whole research programme.
See cornerstone in the Oxford Advanced American DictionarySee cornerstone in the Oxford Learner's Dictionary of Academic English
Check pronunciation: cornerstone

Nearby words

swamp
noun
 
 
From the Topic
Geography
C1
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