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academism
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Acadian orogeny
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Acadian orogeny
A·ca·di·an o·rog·e·ny


noun 
Definition:
 
mountain building stage: the stage of mountain formation that occurred in the Appalachian Mountains during the Devonian Period
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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