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ordnance survey |
ordonnance |
ordonnant |
ordovian |
ordovician |
ordovician period
| ordure
| ordurous
| ore
| ore bed
| ore dressing
ordovician period
WORDNET DICTIONARY
Noun ordovician period has 1 sense
- ordovician period(n = noun.time) ordovician - from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds; Array is a part of paleozoic, paleozoic era
is a kind of geological period, period
For further exploring for "ordovician period" in Webster Dictionary Online
