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

Bryce Harper hit his 377th career home run and Jhoan Duran struck out the side in a perfect ninth for his 13th save to lead the Philadelphia Phillies to a 3-2 win over the San Diego Padres on Tuesday night. —CBS News, 3 June 2026

Three relievers each pitched a scoreless inning before Raisel Iglesias closed it with a perfect ninth for his 10th save. —ABC News, 30 May 2026

Kirby Yates earned his first save of the season by pitching a hitless ninth. —Los Angeles Times, 24 May 2026

Palomar never trailed in the game and broke it open in the seventh when Macias, a sophomore from Carlsbad High who hit ninth in the Comets’ batting order, hit his fifth homer to cap a three-run inning. —Bill Center, San Diego Union-Tribune, 23 May 2026

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