stoma

Noun
  1. A minute epidermal pore in a leaf or stem through which gases and water vapor can pass (synset 111700483)
    is a type of: aperture - a natural opening in something
    subtypes:
    • germ pore - a pore in the outer wall of a spore or pollen grain through which the germ tube or pollen tube makes its exit on germination
    • hydathode, water pore, water stoma - a pore that exudes water on the surface or margin of a leaf of higher plants
    • lenticel - one of many raised pores on the stems of woody plants that allow the interchange of gas between the atmosphere and the interior tissue
    same as: pore, stomate
  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) (synset 105253558)
    referred to in: surgery - the branch of medical science that treats disease or injury by operative procedures
    is a type of: opening, orifice, porta - an aperture or hole that opens into a bodily cavity
    is a part of:
    • colostomy - a surgical operation that creates an opening from the colon to the surface of the body to function as an anus
    • tracheostomy, tracheotomy - a surgical operation that creates an opening into the trachea with a tube inserted to provide a passage for air; performed when the pharynx is obstructed by edema or cancer or other causes

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