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

Derived forms: tephras

Encyclopedia: Tephra

• hook
• hook and eye
• hook line and sinker
• Hook of Holland
• hook on
• hook shot
• hook spanner
• hook up with
• hook wrench
• hook-nosed
• hook-shaped
• hookah
• Hooke
• Hooke's law
• hooked
• hooker
• Hooker's green
• Hooker's onion
• Hooker's orchid
• hookey
• hooking
• hooklet
• hooklike
• hooknose
• hooks