nineteenth

American  

[nahyn-teenth] / ˈnaɪnˈtinθ /

adjective

1. next after the eighteenth; being the ordinal number for 19.

2. being one of 19 equal parts.

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noun

1. a nineteenth part, especially of one (1/19).

2. the nineteenth member of a series.

nineteenth British  

/ ˌnaɪnˈtiːnθ /

adjective

1. (usually prenominal)

   1. coming after the eighteenth in numbering or counting order, position, time, etc, being the ordinal number of nineteen. Often written: 19th

   2. ( as noun )

      the nineteenth was rainy

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noun

1. 1. one of 19 approximately equal parts of something

   2. ( as modifier )

      a nineteenth part

2. the fraction that is equal to one divided by 19 ( 1/ 19 )

Etymology

Origin of nineteenth

before 900; Middle English nyntenthe ( nineteen, -th ² ); replacing nientethe, Old English nigonteotha; nine, tithe

Example Sentences

Rats are thought to have travelled over on boats in the nineteenth century.

From BBC • Mar. 22, 2026

"These include the remains of the giant aquatic snake Palaeophis, which were first found in England in the nineteenth century."

From Science Daily • Dec. 31, 2025

When Britain’s global turn came in the nineteenth century, its naval dominion over the world’s oceans was softened by an enticing cultural ethos of commerce, language, literature, and even sports.

From Salon • May 28, 2025

Caged birds were used as living carbon monoxide detectors starting in the late nineteenth century — thanks to their highly efficient respiratory systems, the birds died from gas leaks long before human miners did.

From Los Angeles Times • Mar. 7, 2025

It is nineteenth century up-to-date with a vengeance.

From "Dracula" by Bram Stoker