ninetieth

[ nahyn-tee-ith ]

adjective
  1. next after the eighty-ninth; being the ordinal number for 90.

  2. being one of 90 equal parts.

noun
  1. a ninetieth part, especially of one (1/90).

  2. the ninetieth member of a series.

Origin of ninetieth

1
before 1100; Middle English nyntithe,Old English nigenteotha.See ninety, -eth2

Words Nearby ninetieth

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use ninetieth in a sentence

  • It was the hundred and ninetieth mile-post just at her nose, and the dial read eight o'clock and fifty-five minutes to a second.

    The Nerve of Foley | Frank H. Spearman

British Dictionary definitions for ninetieth

ninetieth

/ (ˈnaɪntɪɪθ) /


adjective
  1. (usually prenominal)

    • being the ordinal number of ninety in numbering or counting order, position, time, etc. Often written: 90th

    • (as noun): the ninetieth in succession

noun
    • one of 90 approximately equal parts of something

    • (as modifier): a ninetieth part

  1. the fraction equal to one divided by 90 (1/90)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012