decennial

from The Collaborative International Dictionary of English v.0.48
Decennial \De*cen"ni*al\, a. [See {Decennary}.]
   Consisting of ten years; happening every ten years; as, a
   decennial period; decennial games. --Hallam.
   [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Decennial \De*cen"ni*al\, n.
   A tenth year or tenth anniversary.
   [1913 Webster]
    

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