'Rigidity' definitions:

Definition of 'rigidity'

From: WordNet
noun
The physical property of being stiff and resisting bending [syn: rigidity, rigidness]
noun
The quality of being rigid and rigorously severe [syn: inflexibility, rigidity, rigidness] [ant: flexibility, flexibleness]

Definition of 'Rigidity'

From: GCIDE
  • Rigidity \Ri*gid"i*ty\, n. [L. rigiditas: cf. F. rigidit['e]. See Rigid.]
  • 1. The quality or state of being rigid; want of pliability; the quality of resisting change of form; the amount of resistance with which a body opposes change of form; -- opposed to flexibility, ductility, malleability, and softness. [1913 Webster]
  • 2. Stiffness of appearance or manner; want of ease or elegance. --Sir H. Wotton. [1913 Webster]
  • 3. Severity; rigor. [Obs. orR.] --Bp. Burnet. [1913 Webster]
  • Syn: Stiffness; rigidness; inflexibility. [1913 Webster]

Synonyms of 'rigidity'

From: Moby Thesaurus