Undecennial Un`de*cen"ni*al, a. [See {Undecennary}, and cf. {Decennial}.] Occurring or observed every eleventh year; belonging to, or continuing, a period of eleven years; undecennary; as, an undecennial festival. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • undecennial —   a. happening every, or lasting, eleven years …   Dictionary of difficult words

  • Undecennary — Un de*cen na*ry, a. [L. undecim eleven (unus one + decem ten) + ennary as in decennary. Cf. {Undecennial}.] Occurring once in every period of eleven years; undecennial. [1913 Webster] An undecennary account laid before Parliament. E. Stiles.… …   The Collaborative International Dictionary of English

  • un|de|cen|na|ry — «UHN dih SEHN uhr ee», adjective. = undecennial. (Cf. ↑undecennial) …   Useful english dictionary

  • Anniversary — For other uses, see Anniversary (disambiguation). An anniversary is a day that commemorates and/or celebrates a past event that occurred on the same day of the year as the initial event. For example, the first event is the initial occurrence or,… …   Wikipedia

  • undec- — combining form Etymology: Latin undecim, probably from unus one + decem ten more at one, ten : eleven undecane undecennial undecillion …   Useful english dictionary

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