The definition of unibody is a type of motor vehicle construction where a single entity or a single molded unit forms a car's body work and chassis.
The molded frame of a hot rod is an example of a unibody construction.
designating or of a type of construction used in motor vehicles in which the floor, roof, panels, etc. are welded together into one unit, thereby eliminating the need for a separate frame
(countable and uncountable, plural unibodies)
- (uncountable, automotive) 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.
- (countable, automotive) A body of this type.
- (countable, uncountable) A shell that is the principal source of structural strength of an object; also, its design and construction.