IPA: //sænɪˈtɛrɪli//
KK: /sænɪˈtɛrɪli/
In a way that is clean and free from dirt or germs, promoting health and hygiene.
The food was prepared sanitarily to ensure it was safe to eat.
Sanitarily → It is formed from "sanitas" (meaning health) and the suffix "-ly" (meaning in a manner). The word "sanitarily" means in a manner that promotes health or cleanliness.
Think of 'sanitas' which relates to health, and remember that 'sanitarily' means doing something in a way that promotes health.