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1 definition by stuart slade

Otaku slang for a deeply and broadly perverse individual, who enjoys a sexual response to essentially all sexual stimuli, fetishes, complexes, etc. From the latin "omni" meaning "all" and "con," a Japanese corruption of "complex."
"He's more than a lolicon, he's a full-on omnicon. He'll fap to anything."
by stuart slade February 17, 2013