X

Universally used to represent the unknown, ranging from variables in mathematic equations to personality profiling. The uses of X can be traced back to Greek and Roman math.

"14x+(41/3x/x)*7 = 3.14159"
"The patient in question has an X personality, or one that cannot be categorized."

by Shadowrunner January 5, 2007

X

WHY DID YOU FUCKING LOOK UP THE LETTER X OKAY NOTHING IS HERE ITS A FREAKING LETTER

Your dead use the letter X then

by Anna Sami February 20, 2022

X

Why the FUCK did you feel the need to search up X

Stokely: Yo, you heard the alphabet has only 25 letters now?
Daniel: How?
Stokely: X died.

by easportstothegay December 15, 2021

X

target

"There goes the x right there.", one might say upon catchin' some foo, hater, bitch boy, richie, enemy, etc., slippin'.

by Silent Ninja c1998 January 5, 2007

X

1. The one who will, sooner or later, give it to ya.
2. Dead man walking.
3. A militant, right-wing, neo-Fascist.
4. The Devil, and doing the Devil's work.
5. The guy who loves every minute of his job. Ooo Rah!

Yo X, can you believe I married Red?

by spanky4679 January 5, 2007

X

A symbol meaning affirmative or appealling. Can be signalled with the crossing of the arms forming an X. It can be used to state "Yes" or to distinguish someone as being very appealling.

The antonym is O signifying "Out" or "No".

1) Are you in for lunch today? I am X.
2) Did you see that girl in the tight dress? She was a complete X.

by Smooterless4life May 11, 2009

X

In bioinformatics, a character used to represent an arbitrary amino acid.

for instance, the X's in C-SKKGXX-S could stand for any of the 20 standard amino acids in the alphabet

by bioinformatician July 29, 2007