Definition of "70th" [70th]

• Coming next after the sixty-ninth in a series. (adjective)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• "First of all - Mom I hope your 70th was the absolute best if anyone on Earth deserves a day fit for a queen it's you!"
• "Released a year early, the prematurely titled 70th Anniversary Edition of"
• "It is also the year when the world recalls the 70th anniversary of the outbreak of WWII."