Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
epipaleolithic is a noun meaning "middle part of the Stone Age beginning about 15,000 years ago". It carries one recorded sense.
middle part of the Stone Age beginning about 15,000 years ago
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for epipaleolithic come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.