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

nineteenths plural

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 )

Other Word Forms

Noun Inflected Forms

• nineteenths
  plural

Etymology

Origin of nineteenth

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

Example Sentences

See Examples For:

nineteenth

“No one considered gradations of mental illness in the nineteenth century,” she writes.

From The Wall Street Journal ● May 11, 2026

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

From BBC ● Mar. 22, 2026

This result contradicts a scientific explanation that has shaped the understanding of the Faraday Effect since the nineteenth century.

From Science Daily ● Nov. 20, 2025

At the peak, in the late nineteenth and early twentieth centuries, probably one out of every three Americans moved each year.

From Salon ● Mar. 26, 2025

During much of the nineteenth and early twentieth centuries, private detective agencies had filled the vacuum left by decentralized, underfunded, incompetent, and corrupt sheriff and police departments.

From "Killers of the Flower Moon" by David Grann