decennial
Syllabification: (de·cen·ni·al)
Pronunciation: /diˈsenēəl/
Definition of decennial
adjective
Origin:
mid 17th century: from Latin decennium 'a decade', from decennis 'of ten years' (from decem 'ten' + annus 'year'), + -al
mid 17th century: from Latin decennium 'a decade', from decennis 'of ten years' (from decem 'ten' + annus 'year'), + -al
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