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

Tyron Guerrero pitched a scoreless seventh with two strikeouts, Garrett Whitlock went 1-2-3 in the eighth and Danny Coulombe worked a clean ninth. —CBS News, 21 June 2026

Calvin Faucher relieved Gibson and got the last two outs in the eighth before Pete Fairbanks closed with a perfect ninth for his 10th save this season and the 100th of his career. —ABC News, 19 June 2026

Sanders homered off Chad Harville in the ninth to reach the milestone joining Barry Bonds, Willie Mays, Andre Dawson and Bobby Bonds. 2011 — Tony La Russa managed his 5,000th game when the St. Louis Cardinals lost to the Milwaukee Brewers 8-0. —Assistant Sports Editor, Los Angeles Times, 10 June 2026

The right-hander earned his National League-leading 17th save by overcoming a leadoff walk in the ninth to retire the next three batters. —Kevin Acee, San Diego Union-Tribune, 30 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