concave shape

/ˈkɑnˌkeɪv ʃeɪp/

Definitions of concave shape

1. noun

   a shape that curves or bends inward
   synonyms: concavity, incurvation, incurvature

   types:

   dome

   a concave shape whose distinguishing characteristic is that the concavity faces downward

   fossa, pit

   a concavity in a surface (especially an anatomical depression)

   corner, niche, recess, recession

   a small concavity

   bowl, trough

   a concave shape with an open top

   pocket, scoop

   a hollow concave shape made by removing something

   depression, impression, imprint

   a concavity in a surface produced by pressing

   cup

   any cup-shaped concavity

   indentation, indenture

   a concave cut into a surface or edge (as in a coastline)

   notch

   a V-shaped or U-shaped indentation carved or scratched into a surface

   glenoid cavity, glenoid fossa

   the concavity in the head of the scapula that receives the head of the humerus to form the shoulder joint

   glenoid fossa, mandibular fossa

   a deep concavity in the temporal bone at the root of the zygomatic arch that receives the condyle of the mandible

   epigastric fossa, pit of the stomach

   a slight depression in the midline just below the sternum (where a blow can affect the solar plexus)

   dimple

   a small natural hollow in the cheek or chin

   pharyngeal recess

   a small recess in the wall of the pharynx

   channel, groove

   a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record)

   dimple

   any slight depression in a surface

   dip

   a depression in an otherwise level surface

   dent, incision, prick, scratch, slit

   a depression scratched or carved into a surface

   notch

   a V-shaped indentation

   droop, sag

   a shape that sags

   crease, crinkle, furrow, line, seam, wrinkle

   a slight depression in the smoothness of a surface

   chap, crack, cranny, crevice, fissure

   a long narrow depression in a surface

   cleft

   a split or indentation in something (as the palate or chin)

   type of:

   solid

   a three-dimensional shape