Definition of "hygiene" in English

noun

1. The science of health, its promotion and preservation.

2. Those conditions and practices that promote and preserve health.

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

3. Cleanliness.

   • They have poor personal hygiene.

4. (computing, slang, of a macro) The property of having an expansion that is guaranteed not to cause the accidental capture of identifiers.