undecennial

English

Pronunciation

• Hyphenation: un‧de‧cen‧ni‧al

Adjective

undecennial (not comparable)

1. Occurring or observed every eleventh year.

   undecennial festival

   undecennial magnetic period

References

• “undecennial”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.