quaternary, adj.
coming next after the third and just before the fifth in position or time or degree or magnitude
<adj.all> freq. cnt.: 37 freq. cnt.: 33 freq. cnt.: 4
4th fourth quaternary
sample sentences
"the quaternary period of geologic time extends from the end of the tertiary period to the present"
semantic pointers
similar to
consisting of or especially arranged in sets of four
<adj.all>
quaternary quaternate