Ordovician : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: Ordovician	by the DICT Development Group
2 results for Ordovician
From WordNet (r) 3.0 (2006) [wn]:
Ordovician n from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds Synonym(s): Ordovician, Ordovician period
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Ordovician \Or`dovi"cian\, a. [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. -- n. The Ordovician* formation.