The definition of a cornerstone is a stone at the corner of a building, or a basic, essential part of something.noun
- An example of a cornerstone is the first piece of stone placed for a new building, often inscribed with the date to commemorate the occasion.
- An example of a cornerstone is the belief by Christians in Christ as the Son of God.
- a stone that forms part of the corner of a building; esp., a foundation stone of this kind, often inscribed, laid at a ceremony that marks the beginning of building
- the basic, essential, or most important part; foundation
Used by arrangement with John Wiley & Sons, Inc.
also corner stonenoun
- a. A stone at the corner of a building uniting two intersecting walls; a quoin.b. Such a stone, often inscribed, laid at a ceremony marking the origin of a building.
- An indispensable and fundamental basis: the cornerstone of an argument.
cornerstone - Computer Definition
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