IPA: /həˈrɛdɪˌtɛri/
KK: /həˈrɛdɪˌtɛri/
Relating to traits or characteristics that are passed down from parents to their children through genes.
The family has a hereditary condition that affects their health.
Hereditary → It is formed from "hereditarius" (from Latin, meaning inherited) and the suffix "-ary" (meaning pertaining to). The word "hereditary" refers to something that is passed down or inherited from one generation to another.
Think of something that is 'pertaining to' ('-ary') what is 'inherited' ('hereditarius') — that's why hereditary means something passed down through generations.