py·ro·clas·tic 
(pī′rō-klăstĭk)
(pī′rō-klăstĭk)adj.
Composed chiefly of rock fragments or particles of volcanic origin, such as pumice, obsidian, or volcanic ash.
- Indo-European root: lendh-
- Indo-European root: leu-
- Indo-European root: leubh-
- Indo-European root: leudh-
- Indo-European root: leugh-
- Indo-European root: leuk-
- Indo-European root: leu(ə)-
- Indo-European root: lē-
- Indo-European root: līk-
- Indo-European root: lī̆no-
- Indo-European root: lūs-
- Indo-European root: mag-
- Indo-European root: magh-
- Indo-European root: maghu-
- Indo-European root: man-
- Indo-European root: man-
- Indo-European root: marko-
- Indo-European root: me-
- Indo-European root: me-
- Indo-European root: med-
- Indo-European root: medhu-
- Indo-European root: medhyo-
- Indo-European root: meg-
- Indo-European root: mei-
- Indo-European root: mei-