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

Adam worked the eighth, getting some help from a couple plays by second baseman Mason McCoy, and Suarez worked a 1-2-3 ninth for his major league-leading 10th save. —Kevin Acee, San Diego Union-Tribune, 22 Apr. 2025

New closer Ryan Pressly had a shaky ninth but recorded his third save, sealing the Cubs’ fourth straight win and leaving them 6-4 after their 0-2 start in Tokyo. —Paul Sullivan, Chicago Tribune, 5 Apr. 2025

Jake Cronenworth’s home run leading off the eighth inning gave the Padres a lead, and Robert Suarez worked a clean ninth to finish off a 4-3 victory, another marathon effort by the bullpen and the Padres’ second dramatic win in two games this season. —Kevin Acee, San Diego Union-Tribune, 29 Mar. 2025

JSerra 4, Servite 2: The Lions scored two runs in the ninth to win the Trinity League game. —Eric Sondheimer, Los Angeles Times, 3 Apr. 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