from
The Collaborative International Dictionary of English v.0.48
Stoma \Sto"ma\, n.; pl. {Stomata}. [NL., fr. Gr. ?, ?, a mouth.]
1. (Anat.) One of the minute apertures between the cells in
many serous membranes.
[1913 Webster]
2. (Bot.)
(a) The minute breathing pores of leaves or other organs
opening into the intercellular spaces, and usually
bordered by two contractile cells.
(b) The line of dehiscence of the sporangium of a fern. It
is usually marked by two transversely elongated cells.
See Illust. of {Sporangium}.
[1913 Webster]
3. (Zool.) A stigma. See {Stigma}, n., 6
(a) &
(b) .
[1913 Webster]