The actual definition above is incorrect, the correct definition is an infatuation or crush that lasts at a much longer time span. A crush is for a short duration of time, while a limerence may last for months, years or even a lifetime.
Wiki it yourself, you'll see.
P.S. "Limerent" is not an adjective, check dictionary.com while you're at it
The girl fell in love with the boy in high school, she had a limerence but lost it when she moved away to college.
A completly life altering state of mind, more than a "crush", very intense feelings of affection towards somebody else. When the feelings are unrequited, it can destroy ones life.
Matt: I think I'm limerent over Sara.
Tom: As I've never been in limerence I don't understand how you feel, but you can talk to me if you need to.
Noun. Adj. version "limerent."
The sheer shining moment and a brief period of time when a person falls blindly and intensely in love. Limerence is a temporary condition that fortunately goes away, allowing the love-er to come up for air and see a person or situation for what it is rather than what they want it to be. Limerence is being high on love. This condition makes people believe that they have found their soulmate.
Usually followed by a crashing blow - the manic becomes depressive.
"I was in limerence for the entire semester of my senior year, when I had three classes with him. I was so excited I could hardly breathe. He was good, he was kind and everything he said was wise nad witty."
(1) Synonym for crush
used by people who want to sound scientific.
(2) Pseudo-scientific term of the kind that would be coined by an academic who felt her research wasn't getting enough attention from popular magazines.
Bill: "Limerence develops and is sustained when there is a certain balance of hope and uncertainty"
Ted: "In other words, we usually have crushes on people we don't know very well."