unibody

noun

1. (uncountable)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. (countable)A body of this type.
3. (countable, uncountable)A shell that is the principal source of structural strength of an object; also, its design and construction.

   “In selected cases where there is advanced (TASC) D aorto-iliac occlusive disease, treatment with a unibody stent-graft positioned at the aortic bifurcation is a safe and effective treatment.”

4. (countable, euphemistic, uncountable)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.

   “We're looking at the most recent unibody white MacBook here; the first to contain batteries that aren't considered user-serviceable by Apple.”

   “Many persons miss this option to simply put in a new battery when the old one is defective as the unibody designs started to take over.”