Definition of "prehistoric"

Was it then in a pre-historic time that the Romans wandered into these lands?

1832 October, Foreign Quarterly Review, page 369

The cartoon image of prehistoric woman being dragged by the hair by her caveman-husband probably conditions the perceptions of archaeologists far more than they realize.

1981, William Irwin Thompson, The Time Falling Bodies Take to Light: Mythology, Sexuality and the Origins of Culture, London: Rider/Hutchinson & Co., page 137