fiftieth

It weighs less than one fiftieth of a gram; significantly less than current state-of-the-art pacemakers, which weigh at least five grams.

As it celebrates its fiftieth anniversary, the WTA is hoping the new partnership will increase the profile of women's tennis as well as commercial growth and the size of broadcast deals.

Chess players the world over were following the game through faxes and telephone contact, and their collective question was answered at Fischer’s fiftieth move.

They died within five hours of each other, on the fiftieth anniversary to the day and almost to the hour of the official announcement of American independence to the world in 1776.

"As my term as High Commissioner draws to a close, this Council's milestone fiftieth session will be the last which I brief," she said, without giving a reason.