əˈtirēən adjective
Usage: usually capitalized
Etymology: French atérien, from Bir el- Ater (Constantine), Algeria + French -ien -ian
: of or belonging to a derived Mousterian culture of northern Africa which has in addition to the usual European Mousterian traits tanged and winged arrow points and leaf-shaped spearheads and which may be said to carry on the Mousterian tradition into upper Paleolithic times