concave

UK: ˈkɒn.keɪv | US: ˈkɑːn.keɪv

Definition

  1. adj. curved inward like the inner surface of a sphere or circle (opposite of convex)

Structure
con <together, with>cave <hollow>con <together, with>cave <hollow>
Etymology

concave = con<together, with> + cave<hollow>

  • con<together, with>: From Latin cum, meaning "with" or "together."
  • cave<hollow>: From Latin cavus, meaning "hollow" or "empty space."

Etymology Origin:
The word concave originates from Latin concavus, a combination of con- (intensifying "together") and cavus ("hollow"). It describes a surface that curves inward, forming a hollow shape. The term has retained its geometric meaning since its adoption into Middle English from Old French concave.

Examples

  1. The concave mirror focused sunlight into a bright spot.

  2. The artist used a concave lens to distort the image.

  3. The bowl’s concave shape held the soup perfectly.

  4. Concave curves are common in architectural designs.

  5. The satellite dish has a concave surface to capture signals.