concavity

Meanings

1. 1
   noun

   the quality or state of curving inward; the property of being concave

   The mirror's concavity causes parallel rays to converge.

2. 2
   noun

   a hollow, recess, or inward-curving surface

   Rainwater collected in a shallow concavity in the rock.

From Old French concavite and Late Latin concavitas, from Latin concavus ("hollow, arched inward"), combining con- with cavus ("hollow"). Morphologically, concave + -ity.

Topics