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acrogen

Noun

ac=ro=gen

WORDNET DICTIONARY

acrogen(n = noun.plant) - any flowerless plant such as a fern (pteridophyte) or moss (bryophyte) in which growth occurs only at the tip of the main stem;

Derived form adjective acrogenous₁

acrogen, n. [Gr. 'a`kros extreme, high + -gen.].

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.

acrogen, n. Bot. any non-flowering plant having a perennial stem with the growing point at its apex, e.g. a fern or moss.

Derivative

acrogenous adj.

Etymology

Gk akron tip + -GEN

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