/ˈhaɪdʒiːn/
hy·giene
BrE /ˈhaɪdʒiːn/
NAmE /ˈhaɪdʒiːn/
[U]
the practice of keeping yourself and your living and working areas clean in order to prevent illness and disease
food hygiene
personal hygiene
In the interests of hygiene, please wash your hands.