R/T noun 1adjective 3 noun1 •Radiotelephone; radiotelegraph.I had no mental picture at all of Terry Lennox loafing around one of the swimming pools in Bermuda shorts and phoning the butler by R/T to ice the champagne and get the grouse a-toasting. — 1953 adjective3 •Initialism of road and track; used to indicate a high performance edition of a vehicle or part, capable of use for everyday driving as well as amateur racing. •Initialism of road and terrain; used to indicate a ruggedized version of a part, capable of on-road performance and off-road track/terrain performance. •Initialism of rugged-terrain; a type of all-terrain tire (A/T) with better off-road and on-road performance (similar to M/T and H/T respectively).
