名詞 devonian:

1. from 405 million to 345 million years ago; dominance of fishes and appearance of amphibians and ammonites
   同義詞：Devonian period, Age of Fishes

De.vo.ni.an

adj.（形容詞）
Of, belonging to, or designating the geologic time, system of rocks, or sedimentary deposits of the fourth period of the Paleozoic Era, after the Silurian and before the Mississippian or Carboniferous Period, and characterized by the appearance of forests and amphibians.See table at geologic time
泥盆紀的：歸入古生代第四紀的地質(zhì)時期的巖石系統(tǒng)或沉積礦床泥盆紀。處于志留記之后，密西西比紀或石炭紀之前，森林和兩棲類的出現(xiàn)是其特征參見 geologic time
n.（名詞）
The Devonian Period or its system of deposits.
泥盆紀（系）或泥盆紀（系）的沉積礦系體系

來源：
After Devon , a county of southwest England
源自 德文 ，英格蘭西南一村莊