Actonian

发音

UK /ækˈtəʊ.ni.ən/
US /ækˈtoʊ.ni.ən/

词形变化

the Actonian

释义与例句

adj.
  1. 1.

    Of or relating to the architect Samuel Acton; applied to a septennial prize awarded by the Royal Institution.

name
  1. 1.

    A stratigraphic age, a subdivision of the Middle Ordivician, from 454 Ma to 453 Ma.

    地质

词源

From Acton + -ian, after Samuel Acton (c.1773–1837).

来源：wiktionary