Convex

Both "flat" hands P-I draw shape: ( )

Affixes

  • bi+ — Biconvex
  • +ed, +ly — Convexedly
  • +s — Convexes
  • +ity, +s — Convexities
  • +ity — Convexity
  • +ly — Convexly
  • +ness — Convexness