contagion

contagion
[kənˈteɪdʒ(ə)n]
noun
  1. [mass noun]the communication of disease from one person to another by close contact
    (疾病的)接触传染,触染
    the rooms held no risk of contagion.
    这些房间没有接触传染的危险。
    ■[count noun](dated)a disease spread in such a way
    (旧)接触传染病,触染病
    ■(figurative)the spreading of a harmful idea or theory
    (喻)(有害观念或理论的)传播,散布,蔓延
    the contagion of disgrace.
    不光彩的事的散播。
语源
  1. late Middle English (denoting a contagious disease): from Latin contagio(n-), from con- 'together with' + the base of tangere 'to touch'
英语宝典
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