decennis.
ten-year-old
Meaning & usage
ten-year-old
of ten years, lasting ten years
celebrated or occuring every ten years, decennial
Where this word comes from
From decem (“ten”) + annus (“year”) + -is (forming compound adjectives).
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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.