The gender neutral or gender queer formal pronoun, like Mr. or Mrs.
Pronounced "mix".
Person A: Hello (Ms./Mr.) Jones--

Person B: Actually, I go by Mx. Jones.
by Rhoslyn August 18, 2011
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An abbreviation used online of either Mexico or Mexican.
Cassandra grew up in mx so she's mx.
by PhantomSteve November 02, 2007
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1. The forums at www.musicianforums.com, as referred to by members of the site. This is as distinct from mx (small case), who is the site's admin. see also MXican.

2. A song by Deftones, from their Around the Fur album.
Dude, this one time, on MX... (the beginning of one of many MX stories doomed to not being understood by anyone outside the forums)
by sabdo February 08, 2004
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