semirigid
semi.rig.id \.sem-i-'rij-*d, .sem-.i--\ aj 1: rigid to some degree or in some parts of an airship 2: having a flexible cylindrical gas container with an attached stiffening keel that carries the load
semi.rig.id \.sem-i-'rij-*d, .sem-.i--\ aj 1: rigid to some degree or in some parts of an airship 2: having a flexible cylindrical gas container with an attached stiffening keel that carries the load