the period between the Palaeolithic and the Neolithic, in Europe from about 12 000 to 3000 bc, characterized by the appearance of microliths
adjective
2.
of or relating to the Mesolithic
Mesolithic in American English
(ˌmɛsoʊˈlɪθɪk; ˈmɛzoʊˈlɪθɪk)
adjective
[sometimesm-]
designating or of an Old World cultural period (c. 10,000-c. 8000 b.c.) between the Paleolithic and the Neolithic, characterized by the earliest exploitation of local and relatively permanent food resources and the use of microliths