frustum

/'frʌstəm/

Thân thiện

A student holds a geometric model of a frustum in math class.

Definition

1. Noun:
   • A truncated cone or pyramid: A geometric solid that results when a cone or pyramid is cut by a plane parallel to its base, removing the top (apex) portion. The remaining part is the frustum.

Examples of Usage

• Noun:
  • The architect designed a column shaped like a frustum of a cone.
  • To calculate the volume of a frustum, you need to know the areas of the two parallel bases and the height between them.

Advanced Usage

• "Frustum of a cone": Specifically refers to the truncated form of a cone.
  • The lampshade is a classic example of a frustum of a cone.
• "Frustum of a pyramid": Specifically refers to the truncated form of a pyramid.
  • The ancient structure resembled a frustum of a square pyramid.

Variants and Related Words

• Truncated (adj): Describing a shape that has had its apex or end cut off by a plane.
  • A truncated cone is another name for a conical frustum.
• Frusta (n): The less common plural form of 'frustum'.
  • The museum displayed geometric models of various frusta.

Synonyms

• Truncated cone/pyramid: The most direct descriptive synonym.
• Truncum: A rarely used technical synonym.

Related Phrases

(This word is a specific geometric term and does not commonly form phrasal verbs or idioms.)

Học thuật

Noun

1. a truncated cone or pyramid; the part that is left when a cone or pyramid is cut by a plane parallel to the base and the apical part is removed