decennary Meaning, Definition & Usage

  1. noun a period of 10 years
    decennium; decade.

WordNet

De*cen"na*ry noun
Etymology
L. decennium a period of ten years; decem ten + annus a year.
Wordforms
plural Decennaries
Definitions
  1. A period of ten years.
  2. (O. Eng. Law) A tithing consisting of ten neighboring families. Burrill.

Webster 1913