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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 De·vo·ni·an /dɪˈvoniən/
 Devonshire的,泥盆紀

From: Webster's Revised Unabridged Dictionary (1913)

 De·vo·ni·an a. Geol. Of or pertaining to Devon or Devonshire in England; as, the Devonian rocks, period, or system.
 Devonian age Geol., the age next older than the Carboniferous and later than the Silurian; -- called also the Age of fishes. The various strata of this age compose the Devonian formation or system, and include the old red sandstone of Great Britain. They contain, besides plants and numerous invertebrates, the bony portions of many large and remarkable fishes of extinct groups. See the Diagram under Geology.

From: Webster's Revised Unabridged Dictionary (1913)

 De·vo·ni·an, n. The Devonian age or formation.
 

From: WordNet (r) 2.0

 Devonian
      n : from 405 million to 345 million years ago; dominance of
          fishes and appearance of amphibians and ammonites [syn: Devonian
          period, Age of Fishes]