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1.
A person of mixed descent, but there is definately some latino heritage persent.
"Is Jessica Alba black or white or what the fuck?"

"I think she's a quarterican."
by g-man January 18, 2005
 
2.
Used to describe someone (usually a women) who is a quarter (one forth) Puerto Rican.

They are usually watered down white but still have the but still have the butt to prove their Puero Rican heritage.
Tim: Wow, look at the butt on her!

John: Yeah, but she only a quarterican.
by 2201 December 10, 2010
 
3.
A quarter of a Puerto Rican!
Person1: So if her grandmother is full blooded Puerto Rican and her father is Half... what does that make her??
Person2: Hmm.... a Quarterican!!
by Darebear131313 August 09, 2010