eightieth

[ey-tee-ith]
noun
  1. an eightieth part, especially of one (1/80).
  2. the eightieth member of a series.

Origin of eightieth

1350–1400; Middle English eightetithe, Old English (hund)eahtatigotha eightieth. See eighty, -th2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for eightieth

Historical Examples of eightieth


British Dictionary definitions for eightieth

eightieth

adjective
  1. (usually prenominal)
    1. being the ordinal number of eighty in numbering or counting order, position, time, etc: often written 80th
    2. (as noun)the eightieth in succession
noun
    1. one of 80 approximately equal parts of something
    2. (as modifier)an eightieth part
  1. the fraction equal to one divided by 80 (1/80)
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