Definitions

from The Century Dictionary.

  • Eleventh; occurring once in every period of eleven years.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Occurring once in every period of eleven years; undecennial.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Once every eleven years; undecennial.

Etymologies

Sorry, no etymologies found.

Examples

  • Cool word of the day: undecennary, which means "a period of eleven years" or "an eleventh anniversary."

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  • Cool word of the day: undecennary, which means "a period of eleven years" or "an eleventh anniversary."

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  • Japanese-American internment: the US army announced that it would no longer hold Japanese-Americans in Harold Holt: the Australian prime minister went missing and was presumed drowned while swimming off the coast of UFOs was terminated; the conclusion was that sightings were due to mass hysteria, hoaxes, mistakes and the like (1969) undecennary

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