Top Definition
When you spend a very long time at the computer, working on your dissertation (or other big project) but come away feeling like you have achieved nothing, but you are also no longer able to function normally. Usually cured by alcohol.
I have so got Dissertation Brain, I've been sat here for 5 hours, have achieved nothing. It's due in in 48 hours :S
by princesshelz March 24, 2011

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