pyramidal

/pi'ræmidl/

Thân thiện

The children built a pyramidal structure from wooden blocks.

Definition

1. Adjective:
   • Resembling a pyramid in shape: Having the geometric form or general appearance of a pyramid, typically characterized by a polygonal base and triangular sides that meet at a single point (apex).

Usage

• The word "pyramidal" is used to describe objects, structures, or natural formations that have a shape similar to that of a pyramid. It is a formal, often technical, descriptive term.
• Common Contexts: Used in fields like geometry, architecture, geology, anatomy, and botany.

Examples

• Adjective:
  • The ancient temple was crowned with a pyramidal roof.
  • In geometry, a pyramidal volume is calculated from its base area and height.
  • The MRI scan showed a lesion in the pyramidal tract of the brain.
  • Some crystals have a distinct pyramidal form.

Advanced Usage

• "Pyramidal structure": Often used metaphorically to describe hierarchical organizations where power or authority is concentrated at the top.
  • The company had a strict pyramidal structure, with decisions flowing from the CEO downward.
• In Neuroscience: The "pyramidal tracts" are major pathways in the central nervous system, and "pyramidal cells" are a type of neuron with a triangular cell body.

Variants and Related Words

• Pyramid (n): The defining geometric solid or structure.
  • The Great Pyramid of Giza is an architectural marvel.
• Pyramidally (adv): In a pyramidal manner.
  • The rocks were stacked pyramidally.
• Pyramidical (adj): A less common variant synonymous with "pyramidal."

Synonyms

• Conical: Cone-shaped (differs as a cone has a circular base).
• Tapering: Becoming gradually narrower toward one end.

Antonyms

• Columnar: Shaped like a column.
• Cubic: Shaped like a cube.

Related Phrases/Compounds

• Pyramidal peak (Geology): A mountain peak formed by the erosion of cirques, e.g., the Matterhorn.
• Pyramidal number (Mathematics): A figurate number that represents a pyramid with a polygonal base and triangular sides.

Học thuật

Adjective

1. resembling a pyramid

Từ đồng nghĩa

• pyramidic
• pyramidical