ninth

noun

ˈnīn(t)th 

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.

Examples of ninth in a Sentence

Recent Examples on the Web

That was it for the Padres’ high-leverage relievers, who were rested after not pitching the previous three days, and Alek Jacob worked a 1-2-3 ninth. —Kevin Acee, San Diego Union-Tribune, 31 Aug. 2025

New York outfielder Brandon Nimmo provided the heroics in the ninth to give the Mets a 6-5 victory. —Ryan Gaydos, FOXNews.com, 27 Aug. 2025

But Bednar struck out the final two batters of the eighth, then hurled a 1-2-3 ninth. —Peter Sblendorio, New York Daily News, 9 Aug. 2025

Closer Kenley Jansen then pitched a perfect ninth on nine pitches. —Jeff Fletcher, Oc Register, 26 July 2025

Word History

First Known Use

13th century, in the meaning defined at sense 2

Phrases Containing ninth

• ninth cranial nerve

Kids Definition

ninth

noun

ˈnīn(t)th 

plural ninths

: one that is number nine in a series see number

ninth adjective or adverb