Quaternary(a.) Consisting of four; by fours, or in sets of four.
Quaternary(a.) Later than, or subsequent to, the Tertiary; Post-tertiary; as, the Quaternary age, or Age of man.
Quaternary(n.) The number four.
Quaternary(n.) The Quaternary age, era, or formation. See the Chart of Geology.
Words within quaternaries