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olfaction
olfactometer
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Oligocene
oligochaete
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Oligocene

Ol·i·go·cene [ ólligō sn, ə líggə sn ]


noun 
Definition:
 
third geologic period of Tertiary Era: the epoch of geologic time, 38 million to 24 million years ago, during which primates first appeared


Ol·i·go·cene adjective
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