noun
Meaning 1
A tephra, larger than 64 mm (2.5 inches) in diameter, formed when a volcano ejects viscous fragments of lava during an eruption.
Definition source: English Wiktionary via Wiktextract
Topics: geography, geology, natural-sciences, volcanology
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: lava bomb
Antonyms: none provided