nineteenth

1 of 2

adjective

nine·​teenth -ēn(t)th How to pronounce nineteenth (audio)
1
: being number 19 in a countable series
the nineteenth day
see Table of Numbers
2
: being one of 19 equal parts into which something is divisible
a nineteenth share of the money

nineteenth

2 of 2

noun

"
plural nineteenths
-ēn(t)s
-ēn(t)ths
1
: number 19 in a countable series
the nineteenth of the month
2
: the quotient of a unit divided by 19 : one of 19 equal parts of something
one nineteenth of the total
3
a
: a musical interval (see interval sense 2c) embracing two octaves and a fifth : a musical interval embracing nineteen diatonic degrees
b
: an organ stop producing notes a nineteenth above those of the keys used

Word History

Etymology

Adjective

Middle English nyntenthe, adjective & noun, alteration (influenced by nynetene nineteen) of nyentethe, from Old English nigontēotha, from nigontīene, nigontȳne, nigontēne nineteen + -otha, -tha -th

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Cite this Entry

“Nineteenth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nineteenth. Accessed 16 Dec. 2025.

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