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[frag-men-tl] /frægˈmɛn tl/
Geology. clastic (def 3).
Origin of fragmental
First recorded in 1790-1800; fragment + -al1
Related forms
fragmentally, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for fragmental
Historical Examples
  • The absence of fragmental ejecta (broken rock that are thrown out) is extraordinary.

  • Clastic, klas′tik, adj. breaking into fragments, fragmental.

  • fragmental rocks are often quite indurated—the matrix being as hard as the included stones.

    Geology James Geikie
  • When a fragmental rock is composed chiefly of rocks belonging to the acidic group, we say it is felspathic.

    Geology James Geikie
  • These are overlaid by a series of alternating beds of crystalline (c) and fragmental (t) igneous rocks.

    Geology James Geikie
  • The result is the production of huge amounts of fragmental volcanic debris.

    Volcanoes Robert I. Tilling
  • The rocks, so far as I saw them, are massive lavas, and not fragmental scori or other products of explosive eruptions.

    Mount Rainier

  • The cone-building stage may be said to continue until eruptions of lava and fragmental materials cease altogether.

    The Elements of Geology William Harmon Norton
  • Ancient tuffs are known by the fragmental character of their volcanic material, even though they have been altered to firm rock.

    The Elements of Geology William Harmon Norton
  • But the walls were admitting a fragmental echo of what must have been a reverberating voice.

    The Finding of Haldgren Charles Willard Diffin
British Dictionary definitions for fragmental


(of rocks or deposits) composed of fragments of pre-existing rocks and minerals
another word for fragmentary
Derived Forms
fragmentally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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