eighteenth

[ey-teenth]

adjective

next after the seventeenth; being the ordinal number for 18.
being one of 18 equal parts.

noun

an eighteenth part, especially of one (1/18).
the eighteenth member of a series.

Origin of eighteenth

before 900; Middle English eightenthe, eightethe, Old English eahtatēotha. See eighteen + -th²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for eighteenth

Contemporary Examples of eighteenth

I can't rebuild my apartment on the fifth floor while you keep your apartment on the eighteenth floor just as it is.
Hell, No, Not So Low
Megan McArdle
October 16, 2012
William Blake, the eighteenth century poet, illustrator, engraver and mystic, worked from home but lived in his imagination.
William Blake's Heavenly Imagination
Chloe Malle
November 12, 2009

Historical Examples of eighteenth

The close of the eighteenth century shortened the one as much as the other.
Leading Articles on Various Subjects
Hugh Miller
If you doubt it, read the literature of the eighteenth century.
Audrey Craven
May Sinclair
This house dated from about the beginning of the eighteenth century.
Hampstead and Marylebone
Geraldine Edith Mitton
Titchfield Street was built about the end of the eighteenth century.
Hampstead and Marylebone
Geraldine Edith Mitton
This journal is the best on the subject, written in the eighteenth century.
Afloat on the Ohio
Reuben Gold Thwaites

British Dictionary definitions for eighteenth

eighteenth

adjective

(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

1. one of 18 approximately equal parts of something
2. (as modifier)an eighteenth part
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

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)).