unibody noun4 •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. •A body of this type. •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. — 2018 •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. — 2012 formsunibodies