Adjective mesolithic has 1 sense
  1. mesolithic - of or relating to a middle period of the Stone Age (following the paleolithic)
,Noun mesolithic has 1 sense
  1. Mesolithic Age, Mesolithic, Epipaleolithic - middle part of the Stone Age beginning about 15,000 years ago
    --1 is a kind of time period, period of time, period
    --1 is a part of Stone Age
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