undecennary Meaning, Definition & Usage

Un`de*cen"na*ry adjective

Etymology

L. undecim eleven (unus one + decem ten) + -ennary as in decennary. Cf. Undecennial.

Definitions

1. Occurring once in every period of eleven years; undecennial.

   An undecennary account laid before Parliament. E. Stiles.