2 definitions found From The Collaborative International Dictionary of English v.0.48 [gcide]: 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] From WordNet (r) 2.0 [wn]: stoma n 1: a minute epidermal pore in a leaf or stem through which gases and water vapor can pass [syn: {stomate}, {pore}] 2: a mouth or mouthlike opening (especially one created by surgery on the surface of the body to create an opening to an internal organ) [also: {stomata} (pl)]
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