[sometimesm-] designating or of an Old World cultural period (c. 10,000-c. 8000 ) between the Paleolithic and the Neolithic, characterized by the earliest exploitation of local and relatively permanent food resources and the use of microliths
Origin of Mesolithicmeso- + -lithic
the Mesolithic period; Middle Stone Age
Of or relating to the cultural period of the Stone Age between the Paleolithic and Neolithic periods, marked by the appearance of microlithic tools and weapons and by changes in the nature of settlements.
The Mesolithic Period. Also called Middle Stone Age . See Usage Note at Three Age system.