plural ninths
ˈnīn(t)s
ˈnīn(t)ths
1
: one that is number nine in a series
They're leaving on the ninth.
The batter hit a home run in the bottom of the ninth.
see Table of Numbers
2
: one of nine equal parts of something
She owned a ninth of the company.
3
a
: a musical interval embracing an octave and a second
b
: the tone at this interval
c
: a chord containing a ninth
ninth
adjective or adverb
the ninth day of the month
the book's ninth edition
He finished ninth in the race.
Cite this Entry
“Ninth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ninth. Accessed 5 Aug. 2026.
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