Top Definition
City in Southern California, in Orange County.

"A Pleasant Place to Live."
I live in Placentia.

(Duh?)
by breakingthepain July 31, 2008
amount of time longer than a millenium.
Nikki- I take shits once every millenium!
Kacey- I take shits every placentium!

Kuyler- Girls Poop?
by meh meh mehhhh February 20, 2012
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