seventeenth

1 of 2

adjective

sev·​en·​teenth -ēn(t)th How to pronounce seventeenth (audio)
1
: being number 17 in a countable series
the seventeenth day
see Table of Numbers
2
: being one of 17 equal parts into which something is divisible
a seventeenth share of the money

seventeenth

2 of 2

noun

"
plural seventeenths
1
: number 17 in a countable series
the seventeenth of the month
2
: the quotient of a unit divided by 17 : one of 17 equal parts of something
one seventeenth of the total
3
a
: a musical interval (see interval sense 2c) embracing two octaves and a third : a musical interval embracing seventeen diatonic degrees
b
: an organ stop producing notes a seventeenth above those of the keys played

Word History

Etymology

Adjective

Middle English sevententhe, alteration (influenced by seventene) of seventethe, from Old English seofontēotha (akin to Old Norse sjautjāndi, sjautāndi seventeenth), from seofontīene, seofontȳne, seofontēne seventeen + -otha, -tha -th

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Cite this Entry

“Seventeenth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seventeenth. Accessed 19 Dec. 2025.

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