Dictionary

Ordovician

adjective Or·do·vi·cian \ˌr-də-ˈvi-shən\

Definition of ORDOVICIAN

:  of, relating to, or being the period between the Cambrian and the Silurian or the corresponding system of rocks — see geologic time table
Ordovician noun

Origin of ORDOVICIAN

Latin Ordovices, ancient people in northern Wales
First Known Use: 1879

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