STOMA Definition & Meaning

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stoma

[ stoh-muh ]

Phonetic (Standard)IPA

noun

plural stomata stomas.

Also Botany. any of various small apertures, especially one of the minute orifices or slits in the epidermis of leaves, stems, etc., through which gases are exchanged.
Zoology. a mouth or ingestive opening, especially when in the form of a small or simple aperture.
Medicine/Medical. an artificial opening between two hollow organs or between one hollow organ and the outside of the body, constructed to permit the passage of body fluids or waste products.

stoma

/ ˈ��əʊ��ə /

noun

botany an epidermal pore, present in large numbers in plant leaves, that controls the passage of gases into and out of a plant
zoology anatomy a mouth or mouthlike part
surgery an artificial opening made in a tubular organ, esp the colon or ileum See colostomy ileostomy

stoma

/ ��ō′��ə /

, Plural stomata ��ō′��ə-tə

Botany.
One of the tiny openings in the epidermis of a plant, through which gases and water vapor pass. Stomata permit the absorption of carbon dioxide necessary for photosynthesis from the air, as well as the removal of excess oxygen. Stomata occur on all living plant parts that have contact with the air; they are especially abundant on leaves. A single leaf may have many thousands of stomata. Each stoma is generally between 10 to 30 microns in length and is surrounded by a pair of crescent-shaped cells, called guard cells. The guard cells can change shape and close the stoma in order to prevent the loss of water vapor.
Botany.
See Note at transpiration
Zoology.
A mouthlike opening, such as the oral cavity of a nematode.
Medicine.
A temporary or permanent opening in a body surface, especially the abdomen or throat, that is created by a surgical procedure, such as a colostomy or tracheostomy.

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Other �y��vlog Forms

��ٴ�m�� adjective

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�y��vlog History and Origins

Origin of stoma¹

First recorded in 1675–85; from New Latin, from Greek ��ó�� “m�ǳܳٳ�”

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�y��vlog History and Origins

Origin of stoma¹

C17: via New Latin from Greek: mouth

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Example Sentences

Examples have not been reviewed.

As his intestine was removed during surgery, he will now use a stoma to collect waste.

From

Mrs Gibbs, who now has a permanent stoma bag, says she was traumatised by the experience.

From

She has had 11 surgeries in total, including a hysterectomy and the removal of her colon, leaving her with an ileostomy stoma.

From

As carbon dioxide levels in the atmosphere increase, plants may need to open their stomata less frequently, leading to decreased transpiration and preserving more groundwater.

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In recent months, Mercedes has undergone chemotherapy and had a stoma bag fitted.

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