English Lexicon

Contaminant

/kənˈtæmɪnənt/
nounCEFR B2 (Upper)Top #1500 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A substance that makes something impure or unclean by introducing unwanted elements.

    "The water supply was tested for any harmful contaminants."
  2. 2

    An agent that causes contamination, especially in environmental contexts.

    "Industrial waste can be a significant contaminant in local ecosystems."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The word 'contaminant' originates from the Latin 'contaminare', meaning 'to make unclean'. It entered the English language in the late 19th century, reflecting growing concerns about pollution and health.

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