truncated pyramid
- noun
- /trʌŋˈkeɪtɪd ˈpɪrəmɪd/
- Specialized
- In geometry class, we learned how to calculate the volume of a truncated pyramid using specific formulas.
Examples
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Can you visualize a truncated pyramid in three dimensions?
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The monument was designed with a truncated pyramid as its base.
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In geometry class, we learned how to calculate the volume of a truncated pyramid.
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The sculpture resembled a truncated pyramid standing on a square platform.
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The architect designed a truncated pyramid for the new building.
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The artist created a stunning sculpture in the shape of a truncated pyramid that showcased his skills.
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The cake was designed as a truncated pyramid, with layers getting progressively smaller towards the top.
Surface Forms
Morphology
The noun phrase 'truncated pyramid' is transparently compositional: 'truncated' (cut or with the top removed) modifies 'pyramid', so the phrase denotes a pyramid with its top portion removed (a frustum). This adjective+noun combination follows standard compositional patterns and is cross-linguistically predictable, so a B1 learner who knows both constituents can reliably infer the meaning.
Etymology
Truncated pyramid is a name that comes from the picture of a pyramid whose top has been truncated, or 'cut off'. That's why it means the shape you get when a pyramid's top is removed and a flat top remains.