
Concave
Physical Objects
Use 'concave' for physical objects like dishes or reflectors that curve inward.
The satellite dish has a concave surface to focus signals.
Not Flat
'Concave' suggests that something is not flat, but rather it curves inside like a cave.
Skateboarders prefer ramps that are concave for better tricks.
Optics Context
In optics, 'concave' refers to lenses or mirrors that spread out light rays.
Her glasses use concave lenses because she is nearsighted.
Compare with
CavernousCupDepressDishEnvelopHollowIndentSunken
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