decennial
Americanadjective
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of or for ten years.
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occurring every ten years.
noun
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a decennial anniversary.
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its celebration.
adjective
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lasting for ten years
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occurring every ten years
noun
Other Word Forms
Etymology
Origin of decennial
1650–60; < Latin decenni ( um ) a period of ten years ( decenn ( is ) decennary + -ium -ium ) + -al 1
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
So far, India has redrawn parliamentary seats three times based on the decennial census in 1951, 1961 and 1971.
From BBC • Apr. 16, 2026
To revise the directive in time for the 2030 decennial census, the Census Bureau by statute has until April 1, 2027, to advise Congress of the changes.
From The Wall Street Journal • Oct. 23, 2025
When will it issue its maps after the decennial census?
From Slate • Aug. 19, 2025
Some states have taken serious steps to do that by enacting laws that require commissions to redraw the lines after the decennial census, or by using computer models.
From Salon • Aug. 3, 2025
While such free states show a much more rapid decennial increase than any of the far south states, still the total increment scarcely exceeds that of the single state of Georgia.
From The Negro and the elective franchise. A Series Of Papers And A Sermon (The American Negro Academy. Occasional Papers, No. 11.) by Cook, Charles C.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.