peruskivi.
cornerstone (ceremonial stone set at the foundation of a building, often in the corner and inscribed with the completion year and other details)
Meaning & usage
cornerstone (ceremonial stone set at the foundation of a building, often in the corner and inscribed with the completion year and other details)
foundation stone
cornerstone (that which is prominent, fundamental, noteworthy, or central)
Where this word comes from
perus- (“base”) + kivi (“stone”)
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.