fourth has definitions from the fields of music,mathematics,geology
1
[ adjective ] (geology) coming next after the third and just before the fifth in position or time or degree or magnitude

Synonyms

4th quaternary

Examples

"the quaternary period of geologic time extends from the end of the tertiary period to the present"

Used in print

(The Sun, [Baltimore],...)

The Birds got five hits and all three of their runs off Kunkel before Hartman took_over in the top of the fourth .

(The Dallas Morning News,...)

A Texas halfback who does n't even know the team 's plays , Eldon_Moritz , ranks fourth in Southwest_Conference scoring after three games .

One was on a fourth down screen_pass from the Mustang 21 after an incomplete pass into Gannon 's territory .

(Rocky Mountains News, [Denver, Colorado],...)

Chico_Ruiz made a spectacular play on Alusik 's grounder in the hole in the fourth and Wert came_up with some good stops and showed a strong arm at third_base .

Lemon was on with his fourth single of the game , a liner to center .

Related terms

ordinal

2
[ adverb ] in the fourth place

Synonyms

fourthly

Examples

"fourthly, you must pay the rent on the first of the month"

Used in print

(James Bryant Conant, Slums and Suburbs...)

Fourth , the type of vocational training_programs should be related to the employment opportunities in the general locality .

3
[ noun ] following the third position; number four in a countable series

Used in print

(John Cheever, "The Brigadier and the Golf Widow,"...)

Maple and ash , beech and elm , one_hundred to win on Three in the fourth , fifty to win on Six in the third , one_hundred to win on Two in the eighth .

Related terms

rank

4
[ noun ] (mathematics) one of four equal parts

Examples

"a quarter of a pound"

Related terms

common_fraction quarter

5
[ noun ] (music) the musical interval between one note and another four notes away from it

Related terms

interval

*