English dictionary
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English noun: Ordovician | |||
| 1. | Ordovician (time) from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds | ||
| Synonyms | Ordovician period | ||
| Instance hypernym | geological period, period | ||
| Part meronym | Paleozoic, Paleozoic era | ||
Based on WordNet 3.0 copyright © Princeton University.
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Web design: Orcapia v/Per Bang. English edition: .
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