1. (adjective) curving inward

• acetabular
• cotyloid
• cotyloidal
• biconcave
• concavo-concave
• boat-shaped
• bowl-shaped
• bursiform
• pouch-shaped
• pouchlike
• saclike
• concavo-convex
• cuplike
• cupular
• cupulate
• dish-shaped
• dished
• patelliform
• planoconcave
• recessed
• saucer-shaped
• umbilicate
• urn-shaped

1. (adjective) curving inward

• intrusive

1. (adjective) curving inward

• bulging
• convex

1. (adjective) curving inward

• concave shape
• concavity
• incurvation
• incurvature
• concaveness
• concaveness
• concavity
• concavity