Definition of prehistoric in English:

prehistoric

Line breaks: pre|his¦toric
Pronunciation: /priːhɪˈstɒrɪk
 
/

adjective

Derivatives

prehistorically

adverb
More example sentences
  • The two letters are on the middle-right of the stone but, more interestingly, at the top left are a couple of scratches that look as though someone has started to inscribe a pattern, maybe prehistorically, and then given up.
  • Out of 94 species of native land birds, 35 were exterminated prehistorically and 8 more have become extinct in the historical period; thus 46% of the original bird fauna is now extinct.
  • Asbestos probably formed prehistorically when hot waters containing carbon dioxide and dissolved salts under high pressure acted upon rock deposits of iron, magnesia, and silica.

Origin

mid 19th century: from French préhistorique (see pre-, historic).

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