IPA: //daɪəˈtɛtɪk//
KK: /daɪəˈtɛtɪk/
Related to food and nutrition, especially in terms of health and dietary restrictions.
Many dietetic products are designed for people with specific health needs.
Dietetic is formed from "diaita" (meaning way of life or diet) and the suffix "-etic" (meaning pertaining to). The word refers to matters pertaining to diet or nutrition.
Think of 'diaita' as a way of life related to food — that's why dietetic means related to diet.