No, "Nothing" is shorthand. I don't recall the episode name offhand, but his full name is Odo Ital, which is Cardassian for "unknown sample." It was the Bajorans who turned the designation into a family name/given name-style proper name of its own.
http://memory-alpha.org/en/wiki/Odo
Okay, we both have points, but I'm still a little confused on why the creators would say, "we can't translate this fictional language that WE OURSELVES invented perfectly." Come on, any language of a technologically advanced society would HAVE to have words for both "unknown" and "sample."
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