What does the word hygiene mean?

Usage examples for 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 by 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 by T. R. Swinburne