cyst

/sist/

Thân thiện

A doctor uses an ultrasound machine to examine a cyst on a patient's abdomen.

Definition

1. Noun:
   • A small anatomically normal sac or bladderlike structure (especially one containing fluid): In biology, a "cyst" is a natural, often fluid-filled, membranous sac that forms part of an organism's normal anatomy.
   • A closed sac that develops abnormally in some body structure: In medicine, a "cyst" is an abnormal, pathological sac, typically filled with fluid, semisolid, or gaseous material, that develops within tissues.

Examples of Usage

• Noun:
  • The ultrasound revealed a simple ovarian cyst. (The scan showed a common, fluid-filled sac on the ovary.)
  • Some parasites form protective cysts during their life cycle. (Certain parasites create dormant, encapsulated stages.)
  • The sebaceous cyst on his back was removed by a dermatologist. (The abnormal sac containing skin secretions was surgically taken out.)

Advanced Usage

• "To be cystic": Having the nature of or resembling a cyst; containing cysts.
  • The tissue showed cystic changes under the microscope.
• "Cyst formation": The process by which a cyst develops.
  • Cyst formation is a common defense mechanism for some microorganisms.

Variants and Related Words

• Cystic (adj): Relating to or characterized by cysts.
  • Cystic fibrosis is a genetic disorder affecting the lungs and digestive system.
• Encyst (v): To enclose or become enclosed in a cyst.
  • The amoeba will encyst in unfavorable conditions.

Synonyms

• Sac: A pouch or pouchlike structure in an organism.
• Vesicle: A small fluid-filled bladder, sac, or cyst.
• Pouch: A pocket-like structure.

Related Phrases

• Baker's cyst: A fluid-filled swelling behind the knee.
• Ganglion cyst: A noncancerous lump, often on tendons or joints of the wrists or hands.
• Dermoid cyst: A benign tumor containing structures like hair, skin, or teeth.

Related Idioms

(Note: "Cyst" is a technical/medical term and is not commonly used in idiomatic expressions.)

Học thuật

Noun

1. a small anatomically normal sac or bladderlike structure (especially one containing fluid)
2. a closed sac that develops abnormally in some body structure

Từ đồng nghĩa

• vesicle