The .trd file extension is related to the ZX Spectrum emulators and used for ZX Spectrum floppy disk image files.
There are 3 other file types using
the TRD file extension!
.trd - TrID definitions package file
.trd - Lingea Lexicon dictionary file
.trd - TR Assistant dictionary
TRD file extension - ZX Spectrum floppy disk image file
What is trd file? How to open trd files?
File type specification:
The TRD file extension is associated with emulators of ZX Spectrum family of 8-bit computers developed by Sinclair Research and popular in the 1980s. The .trd file stores floppy disk image formatted by ZX Spectrum TR-DOS operating system.