nonrigid
non·ri·gid
adjective
1.
designating an airship having a shape maintained only by internal gas pressure and without a supporting structure
Origin
From non- + rigid.
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.