comparative form of rigid: more rigid

(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.

Hard and not easy to bend or change

plural of rigidity

The action, or the result, of making something rigid

plural of rigidization

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.

plural of rigid

plural of rigidness

Rigidity.