/ ˌpriːhɪˈstɒrɪk; NAmE -ˈstɔːr-; -ˈstɑːr-/ adjective
connected with the time in history before information was written down :
in prehistoric times
prehistoric man / remains / animals / burial sites
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WORD ORIGIN
mid 19th cent.: from French préhistorique (see pre- , historic ).