hygiene

n. branch of science which promotes the preservation of health and the prevention of illness; practices which promote health and cleanliness

Hygiene refers to practices associated with ensuring good health and cleanliness. The scientific term "hygiene" refers to the maintenance of health and healthy living. The term appears in phrases such as personal hygiene, domestic hygiene, dental hygiene, and occupational hygiene and is frequently used in connection with public health. The term "hygiene" is derived from Hygieia, the Greek goddess of health, cleanliness and sanitation. Hygiene is also a science that deals with the promotion and preservation of health. Also called hygienics.
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Hygiene /hy·giene/ science of health and its preservation.hygien´ic oral hygiene proper care of the mouth and teeth. hy·giene n. 1. [more]Hygiene - Community and Resources

Noun
1. a condition promoting sanitary practices; "personal hygiene"
(hypernym) sanitariness
2. the science concerned with the prevention of illness and maintenance of health
(synonym) hygienics
(hypernym) medicine, medical specialty

n. hygiene, branch of science which promotes the preservation of health and the prevention of illness; practices which promote health and cleanliness