Word parts pre- + historic Pronunciation IPA (key): /ˌpriːhɪˈstɒrɪk/ Audio (US)(file) Adjective Positive prehistoric Comparative none Superlative none If something is prehistoric, it is related to or denotes the period before written records. (informal) If something is prehistoric, it is very old. Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads