Found 2 items, similar to Stoma.
English → English (WordNet) Definition: stoma 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)]
English → English (gcide) Definition: Stoma 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. (Zo["o]l.) A stigma. See Stigma, n., 6 (a) & (b) . [1913 Webster]