![nonrigid nonrigid](https://www.tekportal.net/wp-content/uploads/2018/12/nonrigid.png)
adjective
- not rigid.
- designating a type of airship having a flexible gas container without a supporting structure and held in shape only by the pressure of the gas within.
adjective
- not rigid; flexible
- (of the gas envelope of an airship) flexible and held in shape only by the internal gas pressure