We found 4 dictionaries that define the word t/r:

General (1 matching dictionary)

1. T/R: Dictionary.com

Computing (1 matching dictionary)

2. BABEL: Computer Oriented Abbreviations and Acronyms (No longer online)

Miscellaneous (2 matching dictionaries)

3. T/R: Acronym Finder
4. AbbreviationZ (No longer online)

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