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

His second was a double in the ninth that exited his bat at 102.9 mph. —Julia Andersen, CNN Money, 17 June 2025

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. —Houston Mitchell, Los Angeles Times, 10 June 2025

Then, with the game blown open, Tanner Banks prevented drama with a 14-pitch ninth. —Matt Gelb, New York Times, 20 May 2025

Muñoz worked a 1-2-3 ninth for his 14th save, which is tied for second in the major leagues behind Padres closer Robert Suarez’s 15. —Kevin Acee, San Diego Union-Tribune, 17 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