decennial

[ dih-sen-ee-uh l ]
/ dɪˈsɛn i əl /

adjective

of or for ten years.
occurring every ten years.

noun

a decennial anniversary.
its celebration.

Nearby words

  1. decemvirs,
  2. decenary,
  3. decencies,
  4. decency,
  5. decennary,
  6. decennium,
  7. decent,
  8. decenter,
  9. decently,
  10. decentralization

Origin of decennial

1650–60; < Latin decenni(um) a period of ten years (decenn(is) decennary + -ium -ium) + -al1

Related formsde·cen·ni·al·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for decennial


British Dictionary definitions for decennial

decennial

/ (dɪˈsɛnɪəl) /

adjective

lasting for ten years
occurring every ten years

noun

a tenth anniversary or its celebration
Derived Formsdecennially, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for decennial

decennial

adj.

1680s, from Latin decennium, from decennis "of 10 years," from decem "ten" (see ten) + annus "year" (see annual). For vowel change, see biennial.

Online Etymology Dictionary, © 2010 Douglas Harper