hygiology
/haɪˈdʒioʊˌlɒdʒi/Definitions
1. noun
the study of the science of hygiene
“The field of hygiology focuses on the prevention and treatment of diseases through proper hygiene practices.”
2. noun
the science of hygiene, especially in relation to the prevention and spread of diseases
“The new research in hygiology has led to a better understanding of how germs are transmitted.”