Contagiousness

noun

Definitions

Noun
  1. 1
    The state or condition of being contagious. uncountable

    "While people had no knowledge of modern germ theory in the year 1000, they were well aware of the contagiousness of diseases."

  2. 2
    The state or condition of being contagious, easily transmitted to others. wordnet

Etymology

contagious + -ness

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