Overview of noun quaternary

The noun quaternary has 2 senses

• Quaternary, Quaternary period, Age of Man -- (last 2 million years)


• four, 4, IV, tetrad, quatern, quaternion, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe -- (the cardinal number that is the sum of three and one)

Overview of adj quaternary

The adj quaternary has 2 senses

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


• 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")