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English Lexicon

Invasive species

/ɪnˈveɪ.sɪv ˈspiː.ʃiːz/
nounCEFR B2 (Upper)Top #4500 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A species that is non-native to a specific location and whose introduction causes or is likely to cause economic or environmental harm.

    "The introduction of the zebra mussel is a classic example of an invasive species that disrupts local ecosystems."
  2. 2

    A plant or animal that spreads rapidly and can outcompete native species for resources.

    "Kudzu is often referred to as an invasive species due to its rapid growth and ability to choke out native plants."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term combines 'invasive' from Latin 'invasivus' (from invadere, to assault or go into), entering English in the 17th century, and 'species' from Latin 'species' (a particular sort, kind, or appearance). In modern ecology, the compound phrase gained prominent scientific and environmental usage in the late 20th century to describe non-native organisms causing ecological harm.

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