Quaternary

Quaternary

(1): ( a.) Consisting of four; by fours, or in sets of four.

(2): ( n.) The Quaternary age, era, or formation. See the Chart of Geology.

(3): ( a.) Later than, or subsequent to, the Tertiary; Post-tertiary; as, the Quaternary age, or Age of man.

(4): ( n.) The number four.