- a. 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.
More About ordovicianPosition in dictionary: 68428 of 111710 words.
Word Type: a., n.,
Words that start with "ordovician": 1
Words that end with "ordovician": 1
Words that contain "ordovician": 1
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