Definitions

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

  • noun The ordinal number matching the number 90 in a series.
  • noun One of 90 equal parts.

from The Century Dictionary.

  • Next in order or rank after the eighty-ninth or before the ninety-first: an ordinal numeral: as, the ninetieth man.
  • Being one of ninety: as, a ninetieth part.
  • noun A ninetieth part; the quotient of unity divided by ninety: as, two ninetieths.

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

  • adjective Next in order after the eighty-ninth.
  • adjective Constituting or being one of ninety equal parts.
  • noun The quotient of a unit divided by ninety; one of ninety equal parts of anything.
  • noun The next in order after the eighty-ninth.

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

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

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

  • noun position 90 in a countable series of things
  • adjective the ordinal number of ninety in counting order

Etymologies

Sorry, no etymologies found.

Support

Help support Wordnik (and make this page ad-free) by adopting the word ninetieth.

Examples

  • In April 2010, shortly before his ninetieth birthday, Stevens announced his resignation after thirty-five years on the Supreme Court.

    The Conservative Assault on the Constitution Erwin Chemerinsky 2010

  • Sitting in the airport before a television screen, I watch Nelson Mandela take the stage at his ninetieth birthday celebration.

    Between Expectations Md Meghan Maclean Weir 2011

  • Coincidentally, Prince Philip would be celebrating his ninetieth birthday on June 10, 2011.

    William and Kate Christopher Andersen 2011

  • Approaching her ninetieth birthday, she felt that the job had aged her, that it had scooped her up and carried her summarily past her middle years—well, her late middle years.

    Star Trek: Typhon Pact: Rough Beasts of Empire David R. George III 2011

  • At some point following the Diamond Jubilee in 2012—perhaps upon her own ninetieth birthday in 2016—she would agree to step aside allowing Charles to become king at last at age sixty-seven—still making him the oldest person ever to assume the throne, although at an age when he might still leave his mark on history.

    William and Kate Christopher Andersen 2011

  • Approaching her ninetieth birthday, she felt that the job had aged her, that it had scooped her up and carried her summarily past her middle years—well, her late middle years.

    Star Trek: Typhon Pact: Rough Beasts of Empire David R. George III 2011

  • Sitting in the airport before a television screen, I watch Nelson Mandela take the stage at his ninetieth birthday celebration.

    Between Expectations Md Meghan Maclean Weir 2011

  • “Besides, your ninetieth wedding anniversary only comes around once.”

    365 tomorrows » Roi R. Czechvala : A New Free Flash Fiction SciFi Story Every Day 2010

  • Approaching her ninetieth birthday, she felt that the job had aged her, that it had scooped her up and carried her summarily past her middle years—well, her late middle years.

    Star Trek: Typhon Pact: Rough Beasts of Empire David R. George III 2011

  • “Besides, your ninetieth wedding anniversary only comes around once.”

    365 tomorrows » 2010 » April : A New Free Flash Fiction SciFi Story Every Day 2010

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.