1. Designating an airship having a shape maintained only by internal gas pressure and without a supporting structure

Antonym: rigid

• fossil copal
• fossil fuel
• fossil oil
• fossiliferous
• fossilisation
• fossilise
• fossilised
• fossilist
• fossilization
• fossilize
• fossilized
• fossilology
• fossorial
• fossorial foot
• fossorial mammal
• foster
• foster care
• foster family
• foster father
• foster home
• foster mother
• foster parent
• foster-brother
• foster-child
• foster-daughter