fourth meaning and definition

FOURTH noun

Definition of fourth (noun)

1. following the third position; number four in a countable series
2. one of four equal parts
   • "a quarter of a pound"
   • synonyms: fourth part, one-fourth, one-quarter, quarter, quartern, twenty-five percent
3. the musical interval between one note and another four notes away from it

FOURTH adjective

Definition of fourth (adjective)

1. coming next after the third and just before the fifth in position or time or degree or magnitude
   • "the quaternary period of geologic time extends from the end of the tertiary period to the present"
   • synonyms: 4th, quaternary

FOURTH adverb

Definition of fourth (adverb)

1. in the fourth place
   • "fourthly, you must pay the rent on the first of the month"
   • synonyms: fourthly