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sexennial

American  
[sek-sen-ee-uhl] / sɛkˈsɛn i əl /

adjective

  1. of or for six years.

  2. occurring every six years.

sexennial British  
/ sɛkˈsɛnɪəl /

adjective

  1. occurring once every six years or over a period of six years

"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

noun

  1. a sixth anniversary

"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

Other Word Forms

  • sexennially adverb

Etymology

Origin of sexennial

1640–50; < Latin sexenni ( s ) six years old ( sex six + -enn-, combining form of annus year + -is adj. suffix) + -al 1

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.