RDC

1. abbreviationinitialismcomputingInitialism of Remote Desktop Connection.

plural RDCs

1. CanadaUSrail transportA Budd Rail Diesel Car, a self-propelled railcar for passengers.

   1 more example

   The virtue of the R.D.C. is that it can be used for short inter-city trips such as this, or for branch services, or even for commuting. It is a pity that its spartan accommodation makes it unsuitable for long runs; the introduction by the C.P.R. of an "improved" service between Medicine Hat and Vancouver (nearly 1,000 miles stopping at almost all stations), using an R.D.C., got the hostile press reception it deserved.

   1959 November, J. N. Westwood, “The Railways of Canada”, in Trains Illustrated, page 553

2. EnglandIrelandNorthern IrelandWalesabbreviationhistoricalinitialismInitialism of rural district council.