Ostiole

2 definitions found

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

  Ostiole \Os"ti*ole\, n. [L. ostiolum a little door, dim. of
     ostium a door: cf. F. ostiole.] (Bot.)
     (a) The exterior opening of a stomate. See {Stomate}.
     (b) Any small orifice.
         [1913 Webster]



From WordNet (r) 2.0 [wn]:

  ostiole
       n : a small pore especially one in the reproductive bodies of
           certain algae and fungi through which spores pass