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

Whitlock only needed two pitches to draw the inning-ending double play, and from there and polished off a perfect ninth for his first save of the season. —Mac Cerullo, Boston Herald, 15 June 2025

Pirates closer David Bednar picked up his ninth save after working a perfect ninth. —Miami Herald, 11 June 2025

Freshman right-hander Easton Hawk tossed a perfect ninth, striking out James Castagnola to end it, prompting the Bruins to run onto the field in celebration. —Benjamin Royer, Los Angeles Times, 2 June 2025

Cole Sands pitched a perfect ninth for his first save. —Staff, Twin Cities, 14 May 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