Meaning of quaternary
Pronunciation: (kwot'ur-ner"ē, kwu-tûr'nu-rē), [key]
— adj., n., pl. -nar•ies.
- consisting of four.
- arranged in fours.
- (cap.)noting or pertaining to the present period of earth history, forming the latter part of the Cenozoic Era, originating about 2 million years ago and including the Recent and Pleistocene Epochs. See table under
- (of an alloy) having four principal constituents.
- a group of four.
- the number four.
- (cap.)the Quaternary Period or System.
- quaternary (Thesaurus)