I. adjective 1.
[Archaeology] relating to or denoting the main Lower Palaeolithic culture in Europe (preceding the Mousterian) and a similar culture in Africa. It is represented by hand-axe industries, which are dated as a whole to about 1,500,000–150,000 years ago.See also Abbevillian.
2. (as noun the Acheulian) —
[Archaeology] the Acheulian culture or period.
– origin early 20th cent.: from French Acheuléen, from St-Acheul near Amiens in northern France, where objects from this culture were found.