A sense of detachment from reality, where surroundings appear distorted, perceptions are twisted and strangelydisturbing. You may feel like you're trapped in a nightmare, enshrouded in a fog where time and space are slowed.
A feeling caused by anxiety where places that should be familiar seem 'off' in some way. Derealisation (or derealization) extremely hard to describe to someone who has never experienced it before, although if you're here I imagine you're experiencing it right now. It's often described as like a veil has been put over you that dull all your senses and your surroundings, although personally I find it's like everything is too 'vivid'. It normally goes away completely by itself when whoever experiences when they stop thinking about it. See deperonalisation
An extremely sophisticated way to pronounce the word "derivative". This pronunciation was derived during an AP Calculus AB course. Only the coolest and most calculus-savvy people are allowed to use this version of the word.
Moiz- "Hey, Brandon, we need to find the derbadib in order to calculate the total length of these infinite, infinitesimally small line segments in order to get the length of the arc."
(Adj.) A woman that is so hot she makes your eyes water. She is beautiful with a perfect body that makes men fall in love with her after just one look. She is the life of the party and a sexual animal in bed. A very rare find in the animal kingdom and even harder to hold onto if you should ever catch one.