Translation guide
The state or quality of being curved inward like the inside of a bowl. In Japanese, this is expressed through nouns, adjectives, and descriptive phrases depending on whether you are describing a shape, a surface, or a physical depression.
Describing something that curves inward, like a bowl, a cave, or a dent.
A common noun meaning a hollow, dent, or depression. Used for physical indentations in surfaces.
There is a small concavity in the ground.
A technical term for a concave surface, often used in optics or geometry.
A concave mirror collects light.
A formal or technical term meaning 'concave shape'. Rare in everyday speech.
This terrain exhibits a concavity.
Referring to the property or degree of inward curvature, often in scientific or mathematical contexts.
Describing a sunken area on a surface, such as in anatomy, geology, or architecture.
In everyday Japanese, it's more natural to describe the shape or use verbs like 凹む (へこむ, to become dented) rather than using abstract nouns. For example, instead of 'the concavity of the wall', say 壁が凹んでいる (かべがへこんでいる, the wall is dented).
Water had collected in that concavity.