mesolithic mesolite • mesolithic age · · · Info · Definitions · Characters · · mesolithic · · Text Latin · · Script 10 · · Length 4 · · Syllables Definitions · · · (noun) middle part of the Stone Age beginning about 15,000 years ago. Synonyms: Mesolithic Age, Mesolithic, Epipaleolithic. · · Noun Definition 1 (adj) of or relating to a middle period of the Stone Age (following the paleolithic). · · Adjective Definition 1 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074