EIGHTEENTH

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 Dictionary entry overview: What does eighteenth mean? 

• EIGHTEENTH (noun)
  The noun EIGHTEENTH has 1 sense:

1. position 18 in a countable series of things

  Familiarity information: EIGHTEENTH used as a noun is very rare.

• EIGHTEENTH (adjective)
  The adjective EIGHTEENTH has 1 sense:

1. coming next after the seventeenth in position

  Familiarity information: EIGHTEENTH used as an adjective is very rare.

 Dictionary entry details 

• EIGHTEENTH (noun)

Sense 1

Meaning:

Position 18 in a countable series of things

Classified under:

Nouns denoting relations between people or things or ideas

Hypernyms ("eighteenth" is a kind of...):

rank (relative status)

• EIGHTEENTH (adjective)

Sense 1

Meaning:

Coming next after the seventeenth in position

Synonyms:

18th; eighteenth

Similar:

ordinal (being or denoting a numerical order in a series)

 Context examples 

Eighteenth- and nineteenth-century astronomers called them the name because through small telescopes they resembled the disks of the distant planets Uranus and Neptune.

(Hubble Views a Colorful Demise of a Sun-like Star, NASA)

The designation for each member of the eighteenth largest human autosomal chromosome pair.

(Chromosome 18, NCI Thesaurus)

It may appear strange that such should arise in the eighteenth century; but while I followed the routine of education in the schools of Geneva, I was, to a great degree, self-taught with regard to my favourite studies.

(Frankenstein, by Mary Wollstonecraft Shelley)

Such was the state of affairs in the month of July; and Fanny had just reached her eighteenth year, when the society of the village received an addition in the brother and sister of Mrs. Grant, a Mr. and Miss Crawford, the children of her mother by a second marriage.

(Mansfield Park, by Jane Austen)

A crime of mysterious character was committed last night at 16, Godolphin Street, one of the old-fashioned and secluded rows of eighteenth century houses which lie between the river and the Abbey, almost in the shadow of the great Tower of the Houses of Parliament.

(The Return of Sherlock Holmes, by Sir Arthur Conan Doyle)