Athalamous

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Athalamous \A*thal"a*mous\, a. [Gr. 'a priv. + ? nuptial bed.]
     (Bot.)
     Not furnished with shields or beds for the spores, as the
     thallus of certain lichens.
     [1913 Webster]