prehistoric
US /ˌpriː.hɪˈstɔːr.ɪk/
UK /ˌpriː.hɪˈstɔːr.ɪk/
1.
relating to or denoting the period before written records
:
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Dinosaurs lived in prehistoric times.
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Archaeologists discovered a prehistoric settlement.
2.
very old-fashioned or primitive
:
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Their computer system is absolutely prehistoric.
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His ideas on gender roles are quite prehistoric.