Definition of prehistoric
1
: of, relating to, or existing in times antedating written history
2
: of or relating to a language in a period of its development from which contemporary records of its sounds and forms have not been preserved
3
: regarded as being outdated or outmoded
prehistoric attitudes
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Merriam-Webster unabridged
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Time Traveler for prehistoric
The first known use of prehistoric was in 1832
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