billionth billionth  /ˈbɪl jənθ/


  1. (n) position 1,000,000,000 in a countable series of things
  2. (n) one part in a billion equal parts
  3. (adj) the ordinal number of one billion in counting order


  1. This freshly minted matter spins out from the collision at incredibly high velocities and disintegrates again within about one millionth of a billionth of a billionth of a second.
  2. The protein particle proved to be 80 to 95% pure virus; a billionth of a gram of it, injected in a cotton rat, produced symptoms of polio.
  3. It should have a life span of one ten-billionth of a second after it is formed, and then decay into a xi particle and a pi-meson.


  1. Slideshow: Highlights from Apple’s WWDC keynote

    An energized Tim Cook took the stage at Apple's 2013 Worldwide Developer's Conference to kick off Monday's keynote address. He started off by thanking developers for helping the iOS App Store reach its 50 billionth download this year. "That's a lot of zeroes!" Cook said.
    on June 11, 2013     Source: Macworld

  2. Sell iPod Classics and Join App Revolution says Gadget Panda, as App Store Marks 50 Billion Sales

    Even though older Apple models like the iPod Classic can’t access the app store, the digital marketplace exceeded its 50 billionth download last month. Now tech recycling firm Gadget Panda is urging owners to sell iPod Classics, and upgrade to a newer model to start enjoying apps on their device. (PRWeb June 07, 2013) Read the full story at
    on June 7, 2013     Source: PRWeb


  1. "Just over two years ago, we sold our first song. Yesterday, we sold our half billionth song," said Steve Jobs, Apple's chief executive. "As we cross this major milestone, we couldn't be more excited about the future of digital music, iTunes...
    on Jul 18, 2005 By: Steve Jobs Source: Sify

  2. The fact that the physicists can now look in more detail at photoemission is attributable to attosecond spectroscopy: "It is only recently that we have been able to observe processes that last only a few billionths of a billionth of a second,"...
    on Jul 1, 2010 By: Ferenc Krausz Source: Eureka! Science News

  3. "We owe it all to our players for helping us reach our one-billionth hand, and we're saying thanks this November by giving away cash daily as well as tournament credits that players can parlay into a chance at winning thousands, even millions,"...
    on Oct 31, 2007 By: Calvin Ayre Source: Cappers Mall

Word of the Day
propriety propriety
/prə ˈpraɪ ə ti /