Jisho

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Noun
1. foundation stone; cornerstone
Wikipedia definition
2. CornerstoneThe cornerstone (or foundation stone) concept is derived from the first stone set in the construction of a masonry foundation, important since all other stones will be set in reference to this stone, thus determining the position of the entire structure.
Read “Cornerstone” on English Wikipedia
Read “礎石” on Japanese Wikipedia
Read “Cornerstone” on DBpedia

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