D defs.my
Entry 4 senses · 2 variants Webster, 1913

Centennial

/sĕn-tĕn'-ē-əl/ · Cen·ten·ni·al · IPA /sɛnˈtɛnɪəl/
01 a. Relating to, or associated with, the commemoration of an event that happened a hundred years before; as, a centennial ode.
  1. 1.
    Relating to, or associated with, the commemoration of an event that happened a hundred years before; as, a centennial ode.
  2. 2.
    Happening once in a hundred years; as, centennial jubilee; a centennial celebration.
  3. 3.
    Lasting or aged a hundred years.
    “That opened through long lines Of sacred ilex and centennial pines.” Longfellow.
02 n. The celebration of the hundredth anniversary of any event; a centenary.
  1. 1.
    The celebration of the hundredth anniversary of any event; a centenary.[U. S.]