nonrigid
- a designating an airship having a shape maintained only by internal gas pressure and without a supporting structure
- It was the first new nonrigid airship Lakehurst had had in many a moon.
- Ironically, the big nonrigid blimp was designed as an answer to the sudden death that had plagued the larger, rigid, lighter-than-air ships of the 1920s and '30s.
- Airship, nonrigid: An airship whose form is maintained by internal pressure in gas bags.