Noun rigidity has 2 senses
  1. rigidity, rigidness - the physical property of being stiff and resisting bending
    --1 is a kind of inelasticity
    --1 has particulars: inflexibility, inflexibleness
    Derived forms: verb rigidify2, verb rigidify1
  2. inflexibility, rigidity - the quality of being rigid and rigorously severe
    --2 is a kind of unadaptability
    Derived form: verb rigidify2