stoma

/'stoumə/

Thân thiện

A leaf's stoma allows gases to enter and exit the plant.

Definition

1. Noun:
   • A mouth or mouth-like opening (especially one created by surgery on the surface of the body to create an opening to an internal organ): In medicine, a "stoma" is an artificial opening made on the body's surface, often to allow waste to exit the body after part of the intestine or urinary tract has been removed.
   • A minute epidermal pore in a leaf or stem through which gases and water vapor can pass: In botany, a "stoma" is a tiny pore on the surface of a plant, primarily on leaves, that facilitates gas exchange (intake of carbon dioxide and release of oxygen) and transpiration (water vapor loss).

Examples of Usage

• Medical Context:
  • After the surgery, the patient had a colostomy stoma on his abdomen.
  • Proper care of the stoma is essential to prevent infection.
• Botanical Context:
  • Plants regulate water loss by opening and closing their stomata.
  • Carbon dioxide enters the leaf through the stoma for photosynthesis.

Advanced Usage

• "Stoma care": Refers to the management and hygiene practices for a surgical stoma.
  • The nurse provided detailed instructions on stoma care.
• "Stomatal conductance": A botanical term measuring the rate of gas exchange through the stomata.
  • Scientists measured the stomatal conductance to assess the plant's water-use efficiency.

Variants and Related Words

• Stomata (n, plural): The plural form of "stoma," commonly used in botany.
  • The number of stomata on a leaf varies by plant species.
• Stomal (adj): Pertaining to a stoma.
  • Stomal complications can sometimes occur after surgery.
• Stomate (n): A less common variant synonymous with "stoma."

Synonyms

• Medical: Ostomy, opening, aperture.
• Botanical: Pore, aperture.

Related Phrases

• "Stoma cover": A protective device or dressing for a surgical stoma.
  • He used a waterproof stoma cover while showering.
• "Guard cell": In botany, one of the paired cells that surround a stoma and control its opening and closing.
  • The guard cells regulate the size of the stoma.

Học thuật

Noun

1. a mouth or mouthlike opening (especially one created by surgery on the surface of the body to create an opening to an internal organ)
2. a minute epidermal pore in a leaf or stem through which gases and water vapor can pass

Từ đồng nghĩa

• stomate
• pore