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An adjective. A pun combination of 'philosophical' and 'cool'. Used to refer to someone who often engages in deep conversation, but manages to do so in an enjoyable and easily understood way, or utilizes philosophy in line with awesome topics.

Also written, "philosophicool"
Guy 1: "Carl looks into things too much. I just spent an hour listening to his theory on the 'Companion Cube' as a metaphor."

Guy 2: "That's because he's philosophi-cool."
by Falcornia October 09, 2011