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pyrolusite
pyrolysate
pyrolyse
pyrolysis
pyrolyze
pyromancy
pyromania
pyrometallurgy
pyrometer
pyromorphite
pyrone
pyronine
pyrope
pyrophobia
pyrophoric
pyrophosphate
pyrophosphoric acid
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pyroclastic
py·ro·clas·tic [ prō klástik ]


adjective 
Definition:
 
with fragmentary texture: describes sedimentary rock that is composed of fragments of volcanic rock produced by the explosion of a volcanic eruption ( pyroclastic flow )

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