← 3 | 4 | 5 → [a], [b] |
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Cardinal: four Ordinal: fourth Latinate ordinal: quartary, quaternary Reverse order ordinal: fourth to last, fourth from last, last but three Latinate reverse order ordinal: preantepenultimate Adverbial: four times Multiplier: fourfold Latinate multiplier: quadruple Distributive: quadruply Group collective: foursome Multipart collective: quadruplet Greek or Latinate collective: tetrad Greek collective prefix: tetra-, tessera- Latinate collective prefix: quadri- Fractional: quarter, fourth Latinate fractional prefix: quadrant- Elemental: quadruplet Greek prefix: tetarto- Number of musicians: quartet Number of years: quadrennium, olympiad |
Derived from 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.
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quaternary (not comparable)
The fourth ordinal from Latin that might etymologically follow tertiary is quartary, but quaternary (from the distributive number instead) is more usual in English.
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quaternary (plural quaternaries)