单词 | stoma |
释义 | stoma/ˈstəʊmə /noun (plural stomas or stomata /ˈstəʊmətə/ /stəʊˈmɑːtə/) 1 Botany Any of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of variable width which allows movement of gases in and out of the intercellular spaces. Also called stomate.Leaf stomata control plant CO 2 absorption through photosynthesis and water loss through transpiration....
1.1 Zoology A small mouth-like opening in some lower animals.Note the characteristic long and straight stoma of Rhabditidae, the well-developed teeth at the base of a short stoma of Diplogastridae, the well-sclerotized stoma lining in Panagrolaimidae and the stoma lining divided in several elements of Cephalobidae. 2 Medicine An artificial opening made into a hollow organ, especially one on the surface of the body leading to the gut or trachea.A single lesion involving a tracheotomy stoma was treated with the direct application of the probe without using the bronchoscope....
Derivativesstomal
OriginLate 17th century: modern Latin, from Greek stoma 'mouth'. |
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