Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The ordinal number matching the number 70 in a series.
  • noun One of 70 equal parts.

from The Century Dictionary.

  • Next in order after the sixtyninth: an ordinal numeral.
  • Constituting or being one of seventy parts into which a whole may be divided.
  • noun One next in order after the sixty-ninth; the tenth after the sixtieth.
  • noun The quotient of unity divided by seventy; one of seventy equal parts.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Next in order after the sixty-ninth.
  • adjective Constituting or being one of seventy equal parts.
  • noun One next in order after the sixty-ninth.
  • noun The quotient of a unit divided by seventy; one of seventy equal parts or fractions.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective The ordinal form of the number seventy.
  • noun The person or thing in the seventieth position.
  • noun One of seventy equal parts of a whole.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective the ordinal number of seventy in counting order
  • noun position 70 in a countable series of things

Etymologies

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Examples

  • The seventieth is the consummation of the preceding ones, as the

    Commentary Critical and Explanatory on the Whole Bible 1871

  • I wrote a profile of Berry back in 2004, on the occasion of his seventieth birthday:

    Mark Engler: The Luddites Revisited Mark Engler 2011

  • My seventieth birthday failed to change this because I managed scarcely to notice it, but my seventy-first did change it.

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  • But now at the approach to my seventieth birthday my back is sore and my feet are aching and the first thing I am going to do is take out the old, dusty, Austin Healey for a drive around the country… even maybe over to France.

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  • My seventieth birthday failed to change this because I managed scarcely to notice it, but my seventy-first did change it.

    2009 July 29 « One-Minute Book Reviews 2009

  • The seventieth anniversary of Britain's entry into WWII following Germany's invasion of Poland on the 1st of September 1939 sees its surviving participants in their eighties and nineties.

    Archive 2009-09-01 2009

  • The first time I talked about the “five rules for the evolution of cooperation” was at a conference held in March 2006 at the Zoology Department at the University of Oxford in honor of the seventieth birthday of my great friend and mentor, Lord May of Oxford.

    SuperCooperators Martin A. Nowak 2011

  • As virtuoso drummer Jack DeJohnette approaches his seventieth birthday -- he will turn 70 on August 9th of this year -- he can look back at an extensive body of work that speaks for itself.

    Ralph A. Miriello: Jack DeJohnette Celebrates His Concept of Oneness on Sound Travels Ralph A. Miriello 2012

  • The seventieth anniversary of Britain's entry into WWII following Germany's invasion of Poland on the 1st of September 1939 sees its surviving participants in their eighties and nineties.

    70 2009

  • There was to be a gala ceremony in his honor on his seventieth birthday, and ground broken at a new university library that was to bear his name.

    Free Excerpt 1/5: Book of Secrets by Chris Roberson 2009

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