English Dictionary
▪ quaternary
▪ quaternary ammonium compound
▪ quaternary period
▪ quaternate
▪ quaternion
◊ QUATERNARY PERIOD
Quaternary period
n : last 2 million years [syn: {Quaternary}, {Quaternary period},
{Age of Man}]
quaternary
quaternary ammonium compound
quaternary period
quaternate
quaternion
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