follow Dictionary.com

Fiancé or fiancée? What's the difference?

eighteenth

[ey-teenth] /ˈeɪˈtinθ/
adjective
1.
next after the seventeenth; being the ordinal number for 18.
2.
being one of 18 equal parts.
noun
3.
an eighteenth part, especially of one (1/18).
4.
the eighteenth member of a series.
Origin of eighteenth
900
before 900; Middle English eightenthe, eightethe, Old English eahtatēotha. See eighteen + -th2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for eighteenth
British Dictionary definitions for eighteenth

eighteenth

/ˈeɪˈtiːnθ/
adjective
1.
(usually prenominal)
  1. coming after the seventeenth in numbering or counting order, position, time, etc; being the ordinal number of eighteen: often written 18th
  2. (as noun): come on the eighteenth
noun
2.
  1. one of 18 approximately equal parts of something
  2. (as modifier): an eighteenth part
3.
the fraction that is equal to one divided by 18 (1/18)
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
Cite This Source
Word Origin and History for eighteenth
adj.

mid-13c., egtetenþe, modified, by influence of eighteen, from Old English eahtateoða; from eight + teoða "tenth" (see -ty (1)).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for eighteenth

Some English speakers likely know this word

Word Value for eighteenth

17
17
Scrabble Words With Friends