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Webster 1913 Edition


Ordovician

Orˊdo-vi′cian

,
Adj.
[From L.
Ordovices
, a Celtic people in Wales.]
(Geol.)
Of or pertaining to a division of the Silurian formation, corresponding in general to the Lower Silurian of most authors, exclusive of the Cambrian.
Noun.
The Ordovician formation.

Definition 2024


Ordovician

Ordovician

English

Adjective

Ordovician (comparative more Ordovician, superlative most Ordovician)

  1. (geology) Of a geologic period within the Paleozoic era; comprises lower, middle and upper epochs from about 488 to 443 million years ago.

Proper noun

Ordovician

  1. (geology) The Ordovician period.

Translations

See also

  • Appendix:Geologic timescale