Definition of predacious in US English:

predacious

(also predaceous)

adjective

  • (of an animal) predatory.

    ‘predacious insects’
    • ‘The last animals were such accomplished killers that they achieved a level of professionalism rarely seen among predacious beasts.’
    • ‘Superfluous killing has been reported for a diverse group of animals, including zooplankton, stoats and weasels, damselfly naiads, wolves, predaceous mites, and spiders.’
    • ‘Thus, the predacious larvae do not increase in number as a result of resource dynamics.’
    • ‘The ground beetles, or Carabidae, are just one of the largely predacious insect families designed for the job.’
    • ‘Thus, our results confirm theories predicting that isolated, rare, or predaceous species will be lost first from fragmented landscapes.’
    • ‘Unfortunately - at least for entomologists trying to classify them - male predaceous diving beetles lack these embellishments.’
    • ‘The swamp eel is predaceous, grows to about 1 m in length, and can survive dry periods by burrowing in mud.’
    • ‘They are predacious, catching with their hindlegs soft-bodied insects, such as true flies and spiders.’
    • ‘It has, in fact, all the vices and none of the virtues of a predaceous fish ’.’
    • ‘The study of mongoose prey-killing techniques points to a highly efficient killing bite used on vertebrate prey, even in the least predaceous species.’
    • ‘Young live in schools while adults are solitary, predaceous, and aggressive, only coming together to spawn.’
    • ‘It attempts to characterize the predatory behavior of three genera of large predaceous dinosaurs from the distribution of their shed teeth at Como Bluff, Wyoming.’
    • ‘Dorothy McKey-Fender is still writing (on predacious worms, at the moment), and after coming out of the woods, Fender and I visit her at her house in McMinnville, Oregon.’
    • ‘Densities of predaceous arthropods were higher on fertilized than on unfertilized trees.’
    • ‘The predaceous invaders consume the fungus and, researchers suspect, feed the stolen larvae to their own broods.’
    • ‘Similarly, the tiny water flea develops a large protective ‘helmet’ when predaceous larvae of the Chaoborus fly are present in the water nearby.’
    • ‘With no parental care the eggs are vulnerable to predators such as cray fish, predacious insects and small fish.’
    • ‘These flies do not bite or sting humans, and are considered beneficial, as they are predaceous on aphids and other insects.’
    carnivorous, hunting, raptorial, ravening
    View synonyms

Origin

Early 18th century: from Latin praeda ‘booty’ + -acious.

Pronunciation

predacious

/prəˈdeɪʃəs//prəˈdāSHəs/