1. (geology) the solid material thrown into the air by a volcanic eruption that settles on the surrounding areas

Derived forms: tephras

Encyclopedia: Tephra

• number one wood
• number representation system
• number system
• number theorist
• number theory
• number two
• numbering
• numberless
• numberplate
• numbers
• numbers game
• numbers pool
• numbers racket
• numbfish
• numbing
• numbles
• numbly
• numbness
• numbskull
• numdah
• numdah rug
• numen
• Numenius
• Numenius arquata
• Numenius borealis