flatness
1. [ noun ] (mathematics) the property of having two dimensions
Synonyms: planeness two-dimensionality
Related terms: dimensionality
2. [ noun ] the property of having little or no contrast; lacking highlights or gloss
Synonyms: lusterlessness matt matte lustrelessness mat
Related terms: dullness felt
Similar spelling:   fleetness
  fluidness
  Flaten
  fluting
  flatten