'nonrigid' definitions:

Definition of 'nonrigid'

From: WordNet
adjective
Designating an airship having a shape maintained only by internal gas pressure and without a supporting structure [ant: rigid]

Definition of 'nonrigid'

From: GCIDE
  • nonrigid \nonrigid\ adj. (Aeronautics) Not rigid; especially, designating an airship having a shape maintained only by internal gas pressure and without a supporting structure. Opposite of rigid. [WordNet 1.5]