A TEDhead person who is an enthusiast of the multidisciplinary lecture series hosted by the nonprofit TED Conferences, LLC ("TED" being short for "Technology, Education, Design"). Taken to extremes, this enthusiasm can lead to someone becoming more than a simple fan or academic, exhibiting some of the negative qualities of a snob, cultist, or otaku.
You can't even talk to Sharon anymore; she's become such a damned TEDhead. She cornered me in the break room and talked to me about micro-financing in the Third World or some shit for FIFTEEN MINUTES!
Boy- Your such a Tedhead.