Palaeolithic
/ (ˌpælɪəʊˈlɪθɪk) /
noun
the period of the emergence of primitive man and the manufacture of unpolished chipped stone tools, about 2.5 million to 3 million years ago until about 12 000 bc .
See also Lower Palaeolithic, Middle Palaeolithic, Upper Palaeolithic
adjective
(sometimes not capital)
of or relating to this period