noun which may take the genitive case particle 'no', noun
within the family; in the home; domestic
Used to describe matters, relationships, or events occurring inside a family or household. Often appears in compound terms like 家庭内暴力 (domestic violence) or 家庭内感染 (household infection).
家庭内のルールを決めることは大切だ。
It is important to establish rules within the family.
家庭内感染を防ぐため、手洗いを徹底しましょう。
Let's wash our hands thoroughly to prevent household infection.
家族 means 'family members'; 家庭内 focuses on the domestic sphere rather than the people themselves.
Compound of 家庭 (family, home) + 内 (inside). The reading かていない follows standard on'yomi.