ordovician
IPA: ɔrdˈoʊvˈɪʃʌn
Root Word: Ordovician
noun
- (geology) The Ordovician period.
adjective
- (geology) Of a geologic period within the Paleozoic era; comprises lower, middle and upper epochs from about 488 to 443 million years ago.
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Examples of "ordovician" in Sentences
No Sentences Found for ordovician
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