Top Definition
To remove from a hat. From de + petasus + ate. Petasus is the Latin word for hat, and petas is the stem. Similar construction to defenestrate.
The magician depetasates the rabbit.

We depatasate the solution to the recurrence {F(n) = F(n-1) + F(n-2), F(1)=1, F(0)=0}, to reveal the Fibonacci sequence, 0, 1, 1, 2, 3, 5, 8, 13, ... which is incidentally, also related to rabbits.
by lutherdriggers March 25, 2010

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