what is difference between fourth and quaternary
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.
- (Received Pronunciation) IPA(key): /fɔːθ/
- (General American) enPR: fôrth, IPA(key): /fɔɹθ/
- (rhotic, without the horse–hoarse merger) IPA(key): /fo(ː)ɹθ/
- (non-rhotic, without the horse–hoarse merger) IPA(key): /foəθ/
- Rhymes: -ɔː(ɹ)θ
- Homophone: forth
fourth (not comparable)
- The ordinal form of the number four.
Abbreviations: 4th, 4th, IVth, IIIIth; (in names of monarchs and popes, and formal names in English) IV, IV.
fourth (plural fourths)
- (not used in the plural) The person or thing in the fourth position.
- (chiefly American) A quarter, one of four equal parts of a whole.
- (not used in the plural) The fourth gear of an engine.
- (music) A musical interval which spans four degrees of the diatonic scale, for example C to F (C D E F).
- (quarter): fourth part, quarter, ¼, farthing
- Alternative form of ferthe
From the Latin quaternārius (“containing or consisting of four”), from quaternī (“four each”, “four at a time”) + -ārius (whence the English suffix -ary); compare the French quaternaire.
- (UK) IPA(key): /kwəˈtɜːnəɹi/; (rare) IPA(key): /ˈkwɔːtən(ə)ɹi/
- (US) IPA(key): /ˈkwɑːtɚˌnɛəɹi/
quaternary (not comparable)
- Of fourth rank or order
- the quaternary stress in a pronounced word
- Of a mathematical expression containing e.g. x4
- Relating to or in number base four
- (organic chemistry) quaternary ammonium
- (inorganic chemistry) composed of four elements
The fourth ordinal from Latin that might etymologically follow tertiary is quartary, but quaternary (from the distributive number instead) is more usual in English.
- quaternary ammonium
- unary, unitary (1)
- primary (1st)
- binary (2)
- secondary (2nd)
- ternary or trinary (3)
- tertiary (3rd)
- quaternary (4)
- quartary (4th)
- tetranary (4)
- quinary (5)
- senary (6)
- septenary (7)
- octonary (8)
- novenary (9)
- nonary (9th)
- denary (10)
- duodenary (12)
- vicenary (20)
- tricenary (30)
- sexagenary (60)
- centenary (100)
quaternary (plural quaternaries)
- (chemistry) A quaternary compound.
- (geology) The Quaternary period or the system of deposits laid down during it.