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English adjective: quaternary

1. quaternary consisting of or especially arranged in sets of four

SamplesQuaternate leaves.
A quaternary compound.




2. quaternary coming next after the third and just before the fifth in position or time or degree or magnitude

SamplesThe quaternary period of geologic time extends from the end of the tertiary period to the present.

Synonyms4th, fourth



English noun: Quaternary

1. Quaternary (time) last 2 million years

SynonymsAge of Man, Quaternary period

Instance hypernymgeological period, period

Part holonymGlacial epoch, Holocene, Holocene epoch, Pleistocene, Pleistocene epoch, Recent, Recent epoch

Part meronymAge of Mammals, Cenozoic, Cenozoic era

2. quaternary (quantity) the cardinal number that is the sum of three and one

Synonyms4, four, foursome, IV, Little Joe, quadruplet, quartet, quatern, quaternion, quaternity, tetrad

Broader (hypernym)digit, figure

Based on WordNet 3.0 copyright © Princeton University.
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