Part of speech: noun

The scientific study of the preservation of health.

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Usage examples "hygiene":

  1. He therefore instituted a series of experiments to discover its defects from the point of view of hygiene. - "The Booklover and His Books", Harry Lyman Koopman.
  2. Then Science, with irrigation works and improved hygiene, strives hard to gain a victory, but still the struggle rages doubtfully. - "A Holiday in the Happy Valley with Pen and Pencil", T. R. Swinburne.
  3. If it prevailed it would, no doubt, by means of hygiene, save the lives of many Chinamen, but would at the same time make them not worth saving. - "The Problem of China", Bertrand Russell.