fibrillary

A scientist examines fibrillary structures under a microscope.

Definition

1. Adjective:
   • Relating to fibrils: "fibrillary" describes something that pertains to, consists of, or resembles fibrils — very small, threadlike fibers or structures, especially in biological tissues (e.g., muscle, nerve, or plant cells).
   • Fine and threadlike: It can also mean having the form of small fibers or fine threads, often used in anatomy or pathology to describe minute structural elements.

Usage Examples

• (The heart muscle's fine, threadlike fibers allow it to contract efficiently.)
• (The small, threadlike fibers inside the cell could be seen.)
• (Proteins that form fine fibers help hold tissues together.)

Advanced Usage

• "fibrillary gliosis": a medical term for a condition where glial cells in the brain produce excess fibrillary material (fine fibers), often in response to injury.

  • The MRI showed signs of fibrillary gliosis in the patient's frontal lobe. (The scan revealed abnormal fiber growth in the brain's glial cells.)

• "fibrillary tangle": a pathological structure found in neurons, composed of twisted fibrils, associated with Alzheimer's disease.

  • Neurofibrillary tangles are a hallmark of Alzheimer's disease. (These twisted fiber clusters inside nerve cells are a key sign of the condition.)

Variants and Related Words

• Fibril (noun): a small, threadlike fiber or filament, often forming part of a larger structure.

  • Each muscle cell contains many tiny fibrils. (The cell is made up of numerous small fibers.)

• Fibrillate (verb): to form or become fibrils; also used in medicine to describe rapid, irregular contractions of muscle fibers (e.g., atrial fibrillation).

  • The heart muscle began to fibrillate, causing an irregular heartbeat. (The muscle fibers contracted chaotically.)

• Fibrillation (noun): the process of forming fibrils, or a medical condition involving rapid, uncoordinated muscle fiber contractions.

  • Atrial fibrillation is a common heart rhythm disorder. (A condition where the upper chambers of the heart quiver irregularly.)

Synonyms

• Fibrous: consisting of or resembling fibers.
• Threadlike: having the shape or appearance of a thin thread.
• Filamentous: composed of or resembling filaments (very thin strands).

Related Idioms

Note: "fibrillary" is a technical term and does not commonly appear in idioms or phrasal verbs.