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

The right-hander tossed a perfect ninth, getting three flyouts to end the game to earn his first save of the year. —Meghan Montemurro, Chicago Tribune, 21 May 2025

His best finish was, of course, at the Valero, but that came after a solo ninth at the Texas Children's Houston Open. —Savannah Leigh Richardson, MSNBC Newsweek, 15 May 2025

Díaz, an All-Star in 2023, allowed three consecutive home runs in the first game of a doubleheader, part of a five-run ninth for the Cardinals. —C. Trent Rosecrans, New York Times, 1 May 2025

Miami entered Saturday's game against the Memphis Grizzlies ninth in the Eastern Conference standings. —Chantz Martin, Fox News, 16 Mar. 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