fourth

noun

ˈfȯrth 

plural fourths ˈfȯr(th)s 

1

: one that is number four in a series

I was the fourth to arrive.

They arrive on the fourth. [=the fourth day of the month]

see Table of Numbers

2

: one of four equal parts of something : quarter entry 1

Cut the cake into fourths.

a fourth of the population

3

a

: a musical interval (see interval sense 2) embracing four tones of the diatonic scale

b

: a tone at this interval

specifically : subdominant sense 1

c

: the harmonic combination of two tones a fourth apart

4

: the fourth forward gear or speed of a motor vehicle

shifted into fourth

5

the Fourth : July 4 observed as a legal holiday in the U.S. in commemoration of the adoption of the Declaration of Independence in 1776 : Fourth of July

watched fireworks on the Fourth

called also Independence Day

fourth adjective or adverb

the fourth edition of a book

the fourth tallest mountain

fourthly adverb

Fourthly, don't sing a whole opera through …

—Mark Twain

Examples of fourth in a Sentence

cut the cake into fourths

She drank a fourth of the bottle.

Recent Examples on the Web

Mabini’s kick return score came on the opening play of the second half, which was part of a run of three straight Rebels (10-1) TDs that gave them a 28-7 lead early in the fourth. —Matt Schubert, The Denver Post, 17 Nov. 2024

With Davis absent for the final 17-plus minutes, LeBron James dialed up his intensity in the latter stages of the third quarter and early in the fourth, helping the Lakers turn a five-point deficit late in the third (77-72) into a double-digit (103-89) early in the fourth. —Khobi Price, Orange County Register, 10 Nov. 2024

The Bucs scored 10 straight points in the third before Kansas City answered with back-to-back touchdowns in the fourth. —Rohan Nadkarni, NBC News, 5 Nov. 2024

Asians make up the largest minority in District 47: One fourth of the district’s 755,000 residents are Asian. —Defne Karabatur, Los Angeles Times, 24 Oct. 2024

Word History

Etymology

see four

First Known Use

1594, in the meaning defined at sense 2

Phrases Containing fourth

• a poor second/third/fourth
• fourth dimension
• fourth estate
• fourth trimester
• fourth wall
• fourth world
• sixty-fourth note
• sixty-fourth rest

Kids Definition

fourth

noun

ˈfō(ə)rth 

ˈfȯ(ə)rth

1

: one that is number four in a series see number

2

: the difference in pitch between the first tone and the fourth tone of a scale

fourth adjective or adverb

fourthly adverb