\ ˈnīn(t)th How to pronounce ninth (audio) \
plural ninths\ ˈnīn(t)s How to pronounce ninth (audio) , ˈnīn(t)ths \

Definition of ninth

1 : one that is number nine in a series — see Table of Numbers
2a : a musical interval embracing an octave and a second
b : the tone at this interval
c : a chord containing a ninth

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Other Words from ninth

ninth adjective or adverb

Examples of ninth in a Sentence

She owned one ninth of the company.
Recent Examples on the Web Woodruff allowed just two hits and one walk in eight innings with 10 strikeouts, and Hader worked a clean ninth as the Brewers topped the Cardinals, 3-0. Jr Radcliffe, Milwaukee Journal Sentinel, 28 Sep. 2020 Mexican and Canadian auto unions have said in a report that Mexican autoworkers earn about $3.95 an hour, which is about one-ninth of average wages north of the border. Washington Post, 27 Sep. 2017 Craig Kimbrel allowed one hit in a scoreless ninth for his 20th save., 19 June 2017 Bryan Shaw breezed through the eighth and Cody Allen recorded an uneventful ninth. Zack Meisel,, 11 June 2017 Britton pitched a scoreless ninth in the host Keys’ 3-0 loss to the Lynchburg Hillcats but needed 19 pitches to get through the inning after allowing a double to right-center by No. Eduardo A. Encina,, 3 July 2017 Dayan Diaz (1-1) allowed one hit in a scoreless eighth for the win, and Ken Giles pitched a scoreless ninth for his 19th save. Combined Wire Services,, 2 July 2017 Ruben Garcia threw two scoreless innings and Joe Johnson pitched a scoreless ninth. Randy Mcroberts, The Aegis, 29 June 2017 Cabrera’s was his ninth of the season, to rightfield. Anthony Fenech, Detroit Free Press, 28 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ninth.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ninth

13th century, in the meaning defined at sense 1

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Time Traveler for ninth

Time Traveler

The first known use of ninth was in the 13th century

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Statistics for ninth

Cite this Entry

“Ninth.” Dictionary, Merriam-Webster, Accessed 16 Jun. 2021.

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More Definitions for ninth



English Language Learners Definition of ninth

: the number nine in a series
: one of nine equal parts of something


\ ˈnīnth How to pronounce ninth (audio) \

Kids Definition of ninth

 (Entry 1 of 2)

: coming right after eighth



Kids Definition of ninth (Entry 2 of 2)

1 : number nine in a series
2 : one of nine equal parts

More from Merriam-Webster on ninth

Nglish: Translation of ninth for Spanish Speakers

Britannica English: Translation of ninth for Arabic Speakers


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