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imponderable

[im-pon-der-uh-buh l]
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adjective
  1. not ponderable; that cannot be precisely determined, measured, or evaluated.
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noun
  1. an imponderable thing, force, agency, etc.
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Origin of imponderable

From the Medieval Latin word imponderābilis, dating back to 1785–95. See im-2, ponderable
Related formsim·pon·der·a·bil·i·ty, im·pon·der·a·ble·ness, nounim·pon·der·a·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for imponderable

Historical Examples

  • A hot body was one which had absorbed an imponderable substance.

    The Machinery of the Universe

    Amos Emerson Dolbear

  • Matter was for the moment as subtle, as imponderable as soul.

  • At all events the onus of proof rests with those who assert it is imponderable.

    Aether and Gravitation

    William George Hooper

  • We have not the slightest reason to believe that Aether is imponderable.

    Aether and Gravitation

    William George Hooper

  • Likeness, dear Baron, is often the result of imponderable things.

    Three Plays

    Luigi Pirandello


British Dictionary definitions for imponderable

imponderable

adjective
  1. unable to be weighed or assessed
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noun
  1. something difficult or impossible to assess
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Derived Formsimponderability or imponderableness, nounimponderably, 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

Word Origin and History for imponderable

adj.

1794, "weightless," from assimilated form of in- (1) "not, opposite of" + ponderable (see ponder). Figurative use, "unthinkable," from 1814. Related: Imponderably. As a noun, by 1842.

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Online Etymology Dictionary, © 2010 Douglas Harper