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concave

adjective

/ˈkɒnkeɪv/

IPA:

Dictionary definition of concave

Having a surface or shape that curves inward, creating a hollow or depressed appearance.
"The concave shape of the satellite dish helped to capture signals from space."

Detailed meaning of concave

It signifies a configuration in which the interior of the structure or form is curved or sloped inward, while the exterior curves outward. Concave shapes often resemble the inside of a bowl or a cave, with a curvature that can vary from gently sloping to more pronounced, depending on the context. In mathematics and geometry, concave surfaces are characterized by having a curvature that opens toward the interior of the shape, as opposed to convex surfaces, which bulge outward. The term "concave" is also used in optics to describe lenses or mirrors with inward-curving surfaces that cause light rays to converge. Overall, "concave" highlights the presence of a hollow or inwardly curved configuration, often associated with specific mathematical, optical, or physical properties.

Example sentences containing concave

1. The sculpture had a concave surface, giving it a unique and elegant touch.
2. His face reflected in the concave mirror, distorting his features comically.
3. The path in the park followed a concave curve, providing a sheltered spot for the bench.
4. I was drawn to the concave design of the modern coffee table.
5. The skate park featured a massive concave ramp that the skaters adored.
6. The spoon's concave shape helps us to scoop soup or cereal easily.

History and etymology of concave

The adjective 'concave' has its etymological origins in Latin. It is derived from the Latin word 'concavus,' which combines 'com,' meaning 'together,' and 'cavus,' meaning 'hollow' or 'cave.' Therefore, the etymology of 'concave' can be understood as something that is curved or hollowed inward, creating a depressed or hollow appearance. This historical connection eloquently captures the essence of 'concave,' as it is used to describe surfaces, shapes, or structures that exhibit this inward curvature, giving rise to a hollow or indented form. The word's origin emphasizes the idea of a cavity or hollow space, making 'concave' a fitting term to depict such shapes or surfaces that curve inward.

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Further usage examples of concave

1. She examined the concave indentation in the wall, wondering what had caused it.
2. The concave side of the leaf collected morning dew.
3. His favorite part of the playground was the concave slide that he could rush down at full speed.
4. The concave lens in her glasses corrected her nearsightedness.
5. The bowl's concave surface was smooth to the touch.
6. The moon seemed to cradle the city in its concave crescent.
7. The concave belly of the pregnant dog showed she had given birth recently.
8. He used a concave tool to scoop out the inside of the pumpkin.
9. The concave shape of the stadium provides all spectators with a good view.
10. The dancer's concave abdomen moved rhythmically with the music.
11. The artist’s sculpture featured a concave surface, intriguing the viewers with its illusionary depth.
12. The concave design of the roof helped collect rainwater for recycling.
13. I put the pebble in the concave indentation at the center of the sundial.
14. The goldsmith skillfully hammered the gold into a concave shape for the necklace.