look up any word, like tribbing:
 
2.
1. Geometry. meeting a given line or surface at right angles.

Our definition: Bisexual, in the same catagory as adjacent which means 'gay'..

(also used for code talk)
1. wit yo perpendicular ass. 2. You adjacent or perpendicular?
by Taheerah Hansen June 13, 2009
 
1.
Adj. The state of having your legs at a right angle to your body esp. while dancing. Often achieved by a female when dancing with a male at frat parties.
Man, Paul got that girl perpendicular last night.

Bro 1: Yo, so many girls went perpendicular on me last night.
Bro 2: Ohh, sounds like a good night.
Bro 1: Yeahh they were backing it up on me.
by ATSC July 06, 2010
 
3.
An adjective used to describe something cool or exciting; used instead of the words cool, sweet, tight etc.
"How perpendicular was THAT movie?!"
"That ride was so perpendicular"
"she must be the most perpendicular girl ever"
"This is gonna be pretty perpendicular"
by GAwesome August 04, 2006
 
4.
The act of stressing syllables in unnecessary places.
Is that a BIRd? Is that a pl-ANE? No, it's perPENdicular!!
by Pitters June 08, 2009