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

Derived forms: tephras

Encyclopedia: Tephra

• Phytophthora infestans
• phytoplankton
• phytotherapy
• phytotoxin
• pi
• pi-meson
• pia
• pia mater
• Piaf
• piaffe
• Piaget
• Piagetian
• pial
• pianism
• pianissimo
• pianissimo assai
• pianist
• pianistic
• piano
• piano accordion
• piano action
• piano damper
• piano keyboard
• piano lesson
• piano maker