a. [ L. centum a hundred + annus year. ]
That opened through long lines
Of sacred ilex and centennial pines. Longfellow. [ 1913 Webster ]
n. The celebration of the hundredth anniversary of any event; a centenary. [ U. S. ] [ 1913 Webster ]
adv. Once in a hundred years. [ 1913 Webster ]
. Colorado; -- a nickname alluding to the fact that it was admitted to the Union in the centennial year, 1876. [ Webster 1913 Suppl. ]