quinquagenary การใช้

By ISAS's quinquagenary anniversary in 2005, the association had grown to include 84 schools spanning six states; in the same year, the Southwest Preparatory Conference ( SPC ) split from ISAS to form an independent athletic conference.
_Anniversary lovers will enjoy these terms from the Suburban Library System : 10 years, decennial; 15, quindecennial; 20, virgintennial ( proposed ); 30, trigentennial; 40, quadragennial; 50, jubilee or quinquagenary; and ( should it come to this ) 15, 000 years, quindecimillenial.
Among events in the College's recent history are SUNY Rockland Community College Board of Trustees designated the building and grounds of Rockland Community College as a Smoke-Free Environment in September 2009 . Additionally, Rockland Community College celebrated the institution's Semicentennial, quinquagenary or Golden Anniversary from September 2009 through August 2010.