quaternary


From The Collaborative International Dictionary of English v.0.48:

Quaternary \Qua*ter"na*ry\, n. [L. numerus quaternarius: cf. F.
   quaternaire.]
   1. The number four. --Boyle.
      [1913 Webster]

   2. (Geol.) The Quaternary age, era, or formation. See the
      Chart of Geology.
      [1913 Webster]
.

From The Collaborative International Dictionary of English v.0.48:

Quaternary \Qua*ter"na*ry\, a. [L. quaternarius consisting of
   four each, containing four, fr. quaterni four each, fr.
   quattuor four: cf. F. quaternaire. See Four.]
   [1913 Webster]
   1. Consisting of four; by fours, or in sets of four.
      [1913 Webster]

   2. (Geol.) Later than, or subsequent to, the Tertiary;
      Post-tertiary; as, the Quaternary age, or Age of man.
      [1913 Webster]
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