integral
🇺🇸
/ˈɪntɪɡrəl/
🇬🇧
/ˈɪntɪɡrəl/
essential to something; a necessary part
Teamwork is integral to our success.
built-in; included as part of something
The device has an integral battery that cannot be removed.
complete with all necessary parts
The integral design includes all components in one unit.