the age of acrogens

1 definition found

the age of acrogens - Collaborative International Dictionary of English v.0.48 :

  Acrogen \Ac"ro*gen\, n. [Gr. 'a`kros extreme, high + -gen.]
     (Bot.)
     A plant of the highest class of cryptogams, including the
     ferns, etc. See Cryptogamia.
     [1913 Webster]
  
     The Age of Acrogens (Geol.), the age of coal plants, or the
        carboniferous era.
        [1913 Webster]