acrogen
n. நுனியில் வளர்முகமுடைய குறிமறைஇனம்.
Ac"ro*gen, n. Etym: [Gr. -gen.] (Bot.) Defn: A plant of the highest class of cryptograms, including the ferns, etc. See Cryptogamia. The Age of Acrogens (Geol.), the age of coal plants, or the carboniferous era.