unibody

Noun

 * 1)  An automobile construction technique in which the body is integrated into a single unit with the chassis rather than having a separate body-on-frame.
 * 2)  A body of this type.
 * 3)  A shell that is the principal source of structural strength of an object; also, its design and construction.
 * 4)  A style of mobile phone, tablet, or laptop computer where the user cannot replace the battery because the device is manufactured as a single sealed unit.
 * 1)  A style of mobile phone, tablet, or laptop computer where the user cannot replace the battery because the device is manufactured as a single sealed unit.