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

Robert Suarez worked a 1-2-3 ninth, moving into a tie for the MLB lead with his 22nd save of the season. —Kevin Acee, San Diego Union-Tribune, 24 June 2025

Reinhart’s second goal of the night and ninth of the playoffs did it on assists from Barkov and Carter Verhaeghe. —Greg Cote, Miami Herald, 18 June 2025

Alexander, who entered and recorded the final out of the eighth, had a 1-2-3 ninth to send the game to extra innings. —Lamond Pope, Chicago Tribune, 15 June 2025

Jose Siri scored on Lindor’s sacrifice fly with one out in the ninth to win it. —Will Sammon, New York Times, 6 Apr. 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