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or (especially Biology) predaceous

[pri-dey-shuh s] /prɪˈdeɪ ʃəs/
predatory; rapacious.
Origin of predacious
1705-15; pred(atory) + -acious
Related forms
predaciousness, predacity
[pri-das-i-tee] /prɪˈdæs ɪ ti/ (Show IPA).
especially Biology, predaceousness, noun
unpredaceous, adjective
unpredaceously, adverb
unpredaceousness, noun
unpredacious, adjective
unpredaciously, adverb
unpredaciousness, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for predacious
Historical Examples
  • Of these, 2.23 per cent are the predacious ground beetles (Carabid), generally considered useful.

  • Indeed, its predacious habits unfit it for associating with its kind.

    Bible Animals; J. G. Wood
  • They cared very little about defending a state of things which their predacious instincts led them, on the contrary, to attack.

    Stronghand Gustave Aimard
  • The sea-leopard, the only predacious member of the seal family, has an elongated agile body and a large head with massive jaws.

    The Home of the Blizzard Douglas Mawson
  • It is probably because these insects are mostly nocturnal and predacious that they do not present more vivid hues.

  • He began to introduce domesticated animals, and that meant a thinning of the ranks of predacious creatures.

  • The principal obstacles to this are snow and predacious animals.

    Our Domestic Birds John H. Robinson
  • The predacious instinct and the combative instinct weigh down and disfigure our economic development.

  • Coyotes of several species occur in Mexico and though not generally regarded as aggressive animals are of a predacious nature.

    Animal Figures in the Maya Codices Alfred M. Tozzer and Glover M. Allen
  • Let us yet further imagine that this predacious species is swifter than our animal, on which it preys.

    The Making of Species Douglas Dewar
British Dictionary definitions for predacious


(of animals) habitually hunting and killing other animals for food
preying on others
Derived Forms
predaciousness, predaceousness, predacity (prɪˈdæsɪtɪ) noun
Word Origin
C18: from Latin praeda plunder; compare predatory
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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Word Origin and History for predacious

also predaceous, 1713, from stem of predation (Latin praedari) + -acious.

Online Etymology Dictionary, © 2010 Douglas Harper
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