hygiene

noun4

1. •
   Those conditions and practices that promote and preserve health.

   • Hygiene is an important consideration in places where food is prepared.
2. •
   Cleanliness.

   • They have poor personal hygiene.
3. •
   The science of health, its promotion and preservation.
4. •
   The property of having an expansion that is guaranteed not to cause the accidental capture of identifiers.