Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
It has been established, however, that the droid's name was taken from real-life filmmaking technical speak when sound editor Walter Murch asked for reel two, dialogue track two — R2-D2 — while working on "American Graffiti."
Source: https://www.slashfilm.com/1286547/what-tie-stands-for-star-wars-universe/