concave shape
- noun
- /ˈkɒn.keɪv ʃeɪp/
:
forma cóncava
- A bowl has a concave shape, allowing it to hold liquids without spilling.
Examples
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Artists sometimes use the illusion of a concave shape to create depth in their paintings.
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A satellite dish is a classic example of a concave shape designed to focus signals.
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The mirror's concave shape allowed it to concentrate sunlight onto a single point.
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The mirror has a concave shape.
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Can you identify a concave shape in this design?
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The architect designed the building with a unique concave shape to enhance its aesthetic appeal.
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In geometry class, we learned that a concave shape has at least one interior angle greater than 180 degrees.
Synonyms
A polygon with at least one angle of more than 180 degrees that has a part pointing inward
Antonyms
How Concave
Surface Forms
Morphology
The noun phrase is transparently built from the adjective 'concave' (shaped like the inside of a bowl) modifying 'shape' (outline or form), so the combined meaning — a form that curves inward — is directly derivable from the constituents. This adjective+noun composition is a standard, compositional pattern found across many languages, making it immediately comprehensible to a learner who knows both words.
Etymology
The term concave shape comes from the old word concave, which means 'hollow', so imagine a bowl or spoon that bends inward. That's why a concave shape today means a shape that 'curves inward' and can focus or hold things toward the middle.
