The quality or state of being rigid; lack of pliability; the quality of resisting change of physical shape / The amount of resistance with which a body opposes change of form.

comparative form of rigid: more rigid

plural of rigidity

Rigidity.

(aviation) An airship whose shape is maintained solely by an internal and/or external rigid structural framework, without using internal gas pressure to stiffen the vehicle (the lifting gas is at atmospheric pressure); typically also equipped with multiple redundant gasbags, unlike other types of airship.

Stiff, rather than flexible. / Fixed, rather than moving. / Rigorous and unbending. / Uncompromising.

plural of rigidness

(transitive, intransitive) To make or become rigid.

present participle of rigidize

Third-person singular simple present indicative form of rigidize