"Rj" Natural Recordings by Native Speakers
Common acronyms for "RJ" include:
Return Journey (aviation)
Radio Junction (telecommunications)
Radio Japan (radio station)
Radio Joystick (term used in video games)
Reaction Jet (science fiction term)
Romans Jeux (organisation for French speaking countries)
Ripley's Games (board game)
RPG Journal (computing term)
Role-playing game (computing term)
Rounded Joiners (carpentry term)
Retained Jews (demographics)
Res Judicata (law term)
Red Junction (shipping term)
Rice Journey (food substance)
Replacement Joints (engineering term)
Repetitive Jumps (computer programming term)
Red Jacket (fashion article)
Rad-iO Flasher (web server gadget)
Rewards Jar (colloquialism)
I couldn't find any information on the word "rixatrix." It's possible that it's a misspelling or a made-up word.