contamination

The definition of contamination is something that contaminates (causes an impurity) or is something that has been made impure or spoiled.

(noun)

Toxic waste that spoils the water supply is an example of contamination.

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See contamination in Webster's New World College Dictionary

noun

  1. a contaminating or being contaminated
  2. something that contaminates

Origin: ME contaminacioun < L contaminatio

See contamination in American Heritage Dictionary 4

noun
  1. a. The act or process of contaminating.
    b. The state of being contaminated.
  2. One that contaminates.

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