Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun quaternary

2 senses of quaternary

Sense 1
Quaternary, Quaternary period, Age of Man -- (last 2 million years)
       INSTANCE OF=> period, geological period -- (a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods")

Sense 2
four, 4, IV, tetrad, quatern, quaternion, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe -- (the cardinal number that is the sum of three and one)
       => digit, figure -- (one of the elements that collectively form a system of numeration; "0 and 1 are digits")

Antonyms of adj quaternary

2 senses of quaternary

Sense 1
quaternate, quaternary -- (consisting of or especially arranged in sets of four; "quaternate leaves"; "a quaternary compound")

INDIRECT (VIA multiple) -> single -- (existing alone or consisting of one entity or part or aspect or individual; "upon the hill stood a single tower"; "had but a single thought which was to escape"; "a single survivor"; "a single serving"; "a single lens"; "a single thickness")

Sense 2
fourth, 4th, quaternary -- (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")

INDIRECT (VIA ordinal) -> cardinal -- (being or denoting a numerical quantity but not order; "cardinal numbers")

Similarity of adj quaternary

2 senses of quaternary

Sense 1
quaternate, quaternary -- (consisting of or especially arranged in sets of four; "quaternate leaves"; "a quaternary compound")
       => multiple (vs. single) -- (having or involving or consisting of more than one part or entity or individual; "multiple birth"; "multiple ownership"; "made multiple copies of the speech"; "his multiple achievements in public life"; "her multiple personalities"; "a pineapple is a multiple fruit")

Sense 2
fourth, 4th, quaternary -- (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")
       => ordinal (vs. cardinal) -- (being or denoting a numerical order in a series; "ordinal numbers"; "held an ordinal rank of seventh")

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