pyroclastic

== English == === Etymology === From pyro- +‎ clastic, from Ancient Greek πῦρ (pûr, “fire”), and κλαστός (klastós, “broken”). === Pronunciation === Rhymes: -æstɪk === Adjective === pyroclastic (not comparable) (volcanology) Mostly composed of rock fragments of volcanic origin or comminuted during an eruption. ==== Derived terms ==== ==== Translations ==== === Noun === pyroclastic (plural pyroclastics) A rock mostly composed of rock fragments of volcanic origin.