Ostiole
Ostiole , noun
[Latin ostiolum a little door, dim. of ostium a door: compare French ostiole.]
(a)
(Botany) The exterior opening of a stomate. See Stomate.
(b)
(Botany) Any small orifice.
Ostiole , noun
[Latin ostiolum a little door, dim. of ostium a door: compare French ostiole.]