A polymer, polyethylene terephthalate (PET), used for making thread and cloth.

Reminiscent of P. T. Barnum (1810–1891), American showman and businessman remembered for promoting celebrated hoaxes and for founding a circus.

(informal) Somewhat central; close to the center.

(automotive) The subsystem of an engine that takes the products of the combustion chamber through a catalytic converter and silencer to the exhaust pipe