qua·ter·na·ry /ˈkwɑtə(r)ˌnɛri, kwəˈtɚ/
qua·ter·na·ry /ˈkwɑtə(r)ˌnɛrɪ, kwəˈtɝnərɪ/ 形容詞
1. Consisting of four; by fours, or in sets of four.
2. Geol. Later than, or subsequent to, the Tertiary; Post-tertiary; as, the Quaternary age, or Age of man.
1. The number four.
2. Geol. The Quaternary age, era, or formation. See the Chart of Geology.
adj 1: consisting of or especially arranged in sets of four;
"quaternate leaves"; "a quaternary compound" [syn: quaternate]
2: 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" [syn: fourth, 4th]
n 1: last 2 million years [syn: Quaternary period, Age of Man]
2: the cardinal number that is the sum of three and one [syn: four,
4, IV, tetrad, quatern, quaternion, quaternity,
quartet, quadruplet, foursome, Little Joe]