- a decennium.
- pertaining to a period of ten years; decennial.
Origin of decennary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for decennary
Historical Examples of decennary
Decennary, de-sen′ar-i, n. a period of ten years—also Decenn′ium.