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  1. poi·son
    IPA[ˈpoiz(ə)n]
  2. noun

    • 1. a substance that is capable of causing the illness or death of a living organism when introduced or absorbed:

      he killed himself with poison strong chemical poisons
      Synonym : toxin, venom, bane, toxicant
    • 2. something that has a destructive or corrupting influence:

      meanwhile he is spreading his poison over the Internet
      Synonym : malice, maliciousness, ill will, hate, malevolence, malignity, malignancy, balefulness, embitterment, embitteredness, spite, spitefulness, venom, acrimony, acrimoniousness, rancor, bad influence, blight, bane, contagion, cancer, canker, corruption, pollution
    • 3. a substance that reduces the activity of a catalyst.

    • 4. an additive or impurity in a nuclear reactor that slows a reaction by absorbing neutrons.

    verb

    • 1. administer poison to (a person or animal), either deliberately or accidentally:

      someone had tried to poison me swans are being poisoned by lead from anglers' lines
      Synonym : administer poison to, give poison to, murder
    • 2. adulterate or contaminate with poison:

      he claimed the guards had poisoned his food
      Synonym : contaminate, put poison in, adulterate, tamper with, spike, lace, doctor, pollute, contaminate, taint, foul, befoul, dirty, blight, spoil
    • 3. smear (a weapon or missile) with poison:

      hunters would use the sap of monkshood to poison their spears he was once shot at with poisoned arrows
    • 4. prove harmful or destructive to:

      the bombings poisoned the political atmosphere and deepened the social divide
    • 5. (of a substance) reduce the activity of (a catalyst).

  3. Variation

    • n.: noun: poison, plural noun: poisons

    • v.: verb: poison, 3rd person present: poisons, gerund or present participle: poisoning, past tense: poisoned, past participle: poisoned

    • noun

      a substance that is capable of causing the illness or death of a living organism when introduced or absorbed:

      something that has a destructive or corrupting influence:

    • verb

      administer poison to (a person or animal), either deliberately or accidentally:

      adulterate or contaminate with poison:

    • noun

      poisonous gas or vapor, used especially to disable or kill an enemy in warfare.
    • noun

      a tactic used by a company threatened with an unwelcome takeover bid to make itself unattractive to the bidder:
    • noun

      a North American climbing shrub of the cashew family, closely related to poison ivy and having similar properties.
    • noun

      a North American climbing plant of the cashew family that secretes an irritant oil from its leaves, which can cause dermatitis.
    • noun

      poisonous gas or vapour, used especially to disable an enemy in warfare.
    • noun

      a tactic used by a company threatened with an unwelcome takeover bid to make itself unattractive to the bidder:
    • noun

      a North American climbing shrub related to poison ivy and having similar properties.
    • noun

      a North American climbing plant which secretes an irritant oil from its leaves that can cause dermatitis.
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