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1. (n.) stoma
a minute opening in leaves, stems, etc., through which gases are exchanged.
2. stoma
a primitive mouth or simple ingestive organ of an invertebrate animal.
3. stoma
a surgical opening in an organ constructed to permit passage of fluids or waste products to another organ or to the outside of the body.
Etymology: (1675–85; < NL < Gk stóma mouth)
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| Definition of 'stoma' |
Princeton's WordNet |
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1. (noun) stoma, stomate, pore
a minute epidermal pore in a leaf or stem through which gases and water vapor can pass
2. (noun) stoma
a mouth or mouthlike opening (especially one created by surgery on the surface of the body to create an opening to an internal organ)
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| Definition of 'stoma' |
Webster Dictionary |
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1. (noun) stoma
one of the minute apertures between the cells in many serous membranes
2. (noun) stoma
the minute breathing pores of leaves or other organs opening into the intercellular spaces, and usually bordered by two contractile cells
3. (noun) stoma
the line of dehiscence of the sporangium of a fern. It is usually marked by two transversely elongated cells. See Illust. of Sporangium
4. (noun) stoma
a stigma. See Stigma, n., 6 (a) & (b)
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Definitions of stoma 
