pyroclastic
adjective Date: 1887 formed by or involving fragmentation as a result of volcanic or igneous action

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • pyroclastic — 1887, from PYRO (Cf. pyro ) + CLASTIC (Cf. clastic) …   Etymology dictionary

  • pyroclastic — [pī΄rə klas′tik] adj. [ PYRO + CLASTIC] of or having to do with rocks formed from material that was explosively ejected from a volcano …   English World dictionary

  • pyroclastic — ALASKA VOLCANO OBSERVATORY GLOSSARY Pertaining to fragmented (clastic) rock material formed by a volcanic explosion or ejection from a volcanic vent. GLOSSARY OF VOLCANIC TERMS Refers to processes resulting from the explosive fragmentation of a… …   Glossary of volcanic terms

  • pyroclastic — /puy reuh klas tik/, adj. Geol. composed chiefly of fragments of volcanic origin, as agglomerate, tuff, and certain other rocks; volcaniclastic. [1885 90; PYRO + CLASTIC] * * * …   Universalium

  • pyroclastic — adjective Mostly composed of rock fragments of volcanic origin …   Wiktionary

  • pyroclastic —    (adjective)    Pertaining to clastic rock particles produced by explosive, aerial ejection from a volcanic vent. Such materials may accumulate on land or under water.    Compare: epiclastic, volcaniclastic, clastic.    G. Smith & HP …   Glossary of landform and geologic terms

  • pyroclastic — adj. made up of volcanically separated fragments …   English contemporary dictionary

  • pyroclastic — py·ro·clas·tic …   English syllables

  • pyroclastic — py•ro•clas•tic [[t]ˌpaɪ rəˈklæs tɪk[/t]] adj. gel composed chiefly of volcanic rock fragments, as agglomerate or tuff • Etymology: 1885–90 …   From formal English to slang

  • pyroclastic — /paɪroʊˈklæstɪk/ (say puyroh klastik) adjective composed chiefly of fragments of volcanic origin, as agglomerate, tuff, and certain other rocks …   Australian English dictionary

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