PCD 

Post Convention Depression that is always, always suffered after an amazing BBYO convention full of friends, spooey, Alephs, BBGs, leadership, dancing, and admiring the amazing regional board.

Me: So, studying for the AP Calc test?
Aleph Boy: No, I can't think about school with my PCD.

PCD by beautyanddelusion October 16, 2012

PCD 

Pitch Circle Diameter.

Refers to the number of lug nuts in a wheel and the distance from one lug to the opposite end of the lug arrangement. This is also known as the bolt pattern.

Typically expressed in (Number of Lugs) X (Distance), for example, 5x4.50 (in inches) or 5x114.3 (in metric).

Mike: I'm looking for some new wheels for my BMW, what PCD would that be?

Paul: The bolt pattern for all BMW vehicles is always 5x120.

PCD by Tatsumatic April 3, 2011

PCD 

Acronym for 'PussyCat Dolls', a girl musical group. See pussycat dolls.

a: have you heard PCD's new album?
b: who?
a: you know, the pussycat dolls.

PCD by b-sup-yo July 3, 2007

PCD 

PCD stands for programmed cell death. This happens when a cell is in a state of poor health/disrepair, so release of special proteins (like cytochrome c - found in mitochondria) either from inside of the cell or by another cell, triggers an organized chain reaction of events, resulting in the degradation and destruction of proteins and nucleic acids inside the cell.
The genes responsible for the proteins that signal PCD are not working correctly in cancer cells.

Bob "Have you heard that cells can commit suicide?"
Pete "No"
Bob "This is also referred to as PCD, or apoptosis"
Pete "Is that going to be on the finals?"
Bob "Definitely!"

PCD by dicAcielcunobiryxoeD June 12, 2008

PCD 

Proper Creep Distance. Adj/verb. The appropriate distance at which you should walk behind an attractive chick. You should maintain this in order to get a good view but avoid alerting her to how hard you're staring at her fine ass and/or legs and making her run off like a spooked gazelle.

Man this hoe train I was PCD'ing downtown was so hot that I almost stepped on a sleeping bum.

PCD by Jogler July 13, 2011

PCD 

PCD stands for Post Camp Depression. It is the feeling when you come back from camp and feel lonely, sad, and disappointed by how fast camp went by. It is also the feeling of missing everything and everyone that was at camp and missing the feeling of joy you had when you were at camp.

I have such bad PCD right now.

PCD by idkbruh July 10, 2017

PCD 

Post concert depression. That day or week after a much anticipated and amazing concert where you wonder how you're going to carry on now that it's behind you. Doing deep dives of the artist's instagram, twitter, youtube, etc. Looking for new shows. Showing everyone the crappy videos you took and them responding to your paragraphs with "sounds great". NO ONE WILL EVER UNDERSTAND

I have such PCD and I just want to kiss Remi Wolf don't talk to me

PCD by Grooaci January 28, 2022