ter·cen·te·na·ry /ˌtɝ(ˌ)sɛnˈtɛnəri, (ˌ)tɚ/
  (a.)三百年的
  Ter·cen·te·na·ry a.  Including, or relating to, an interval of three hundred years. -- n. The three hundredth anniversary of any event; also, a celebration of such an anniversary.
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  tercentenary
       n : the 300th anniversary (or the celebration of it) [syn: tercentennial,
            triennial]