fourth
UK /fɔːθ/ · US /fɔɹθ/ adjective, noun, verb, proper noun
Forms fourths fourthing fourthed the Fourth 4th
- adjective The ordinal form of the number four.
- noun (in the singular) The person or thing in the fourth position.
- noun (chiefly US) A quarter, one of four equal parts of a whole.
- noun (in the singular) The fourth gear of an engine.
- noun (music) A musical interval which spans four degrees of the diatonic scale, for example C to F (C D E F).
- noun (astronomy, rare) One sixtieth of a third or tierce.
- verb (informal) To agree with a proposition or statement after it has already been thirded.
- proper noun (US) The Fourth of July.
Synonyms
fourth part quarter farthing one-fourth one-quarter twenty-five percent quartern 4th quaternary fourthly
Etymology
Inherited from Middle English fourthe, an alteration (due to four) of ferthe, from Old English fēorþa, fēowerþa, from Proto-West Germanic *feurþō, from Proto-Germanic *fedurþô, equivalent to four + -th (ordinal suffix).
Compare West Frisian fjirde, Saterland Frisian fjädde, fjoode, Dutch vierde, German Low German feerde, feerd, German vierte, Danish fjerde, Icelandic fjórði.
Webster’s 1913
- adjective Next in order after the third; the ordinal of four.
- adjective Forming one of four equal parts into which anything may be divided.
- noun One of four equal parts into which one whole may be divided; the quotient of a unit divided by four; one coming next in order after the third.
- noun The interval of two tones and a semitone, embracing four diatonic degrees of the scale; the subdominant of any key. The Fourth, specifically, un the United States, the fourth day of July, the anniversary of the declaration of American independence; as, to celebrate the Fourth.
Etymology [OE. fourthe, ferthe, feorthe, AS. feóredha, fr. feówer four.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “fourth”, CC BY-SA 4.0. Details