Definition for PER-NI'CIOUS

PER-NI'CIOUS, a. [L. perniciosus, from pernicies; perneco, to kill; per and nex, necis, death.]

  1. Destructive; having the quality of killing, destroying or injuring; very injurious or mischievous. Food, drink or air may be pernicious to life or health.
  2. Destructive; tending to injure or destroy. Evil examples are pernicious to morals. Intemperance is a pernicious vice.
  3. [L. pernix.] Quick. [Not used.] – Milton.

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