Hereditary/həˈredɪteri/ Definition 1 of 3Pro Tip 1/3Physical Traits Hereditary often describes physical features passed through generations. Their curly hair is a hereditary characteristic. Pro Tip 2/3Not Always Visible Hereditary traits aren't always apparent; some affect your health internally. She inherited a hereditary blood disorder. Pro Tip 3/3Not Guaranteed Even if a trait is hereditary, it doesn't mean all children will get it. Although intelligence is partially hereditary, it varies in each child.