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  1. le·gion·el·la
    IPA[ˌlējəˈnelə]
  2. n. noun

    • 1. the bacterium that causes legionnaires' disease, flourishing in air conditioning and central heating systems.

    • 2. legionnaires' disease.

  3. Variation

    • n.: noun: legionella, plural noun: legionellae

    • abbreviation

      heating, ventilation, and air conditioning:
    • noun

      the bacterium which causes legionnaires' disease, flourishing in air conditioning and central heating systems.

      legionnaires' disease.

    • abbreviation

      heating, ventilation, and air conditioning:
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