Definition of "150th" [150th]

• The ordinal number of one hundred fifty in counting order (adjective)

WordNet. Princeton University. 2010.

• "Just as during the Pauline Year, our constant reference point was St. Paul, so in the coming months we will look to St. John Vianney, the holy Curé d'Ars, recalling the 150th anniversary of his death."
• "This issue is notable for many reasons, but one not previously mentioned is the presence of three ads tied into our "150th" theme."
• "Today, Stougaard will eat her 148th, 149th and 150th dishes from among the restaurant's about 300 mostly southern Thai specialties -- the halfway point toward her goal of working her way through the entire menu, curry by curry, pad see ew by pad Thai, miang khun shrimp by yala tiger prawn."