/10 

Used as a way to rank objects on a popular Internet message board. Used with both numbers, and objects.

"9/10"
"Expected/10"
"Fat/10"

/10 by ahnonamis December 22, 2004

[10] 

Being a stoned as humanly possible. Some call it "too high" but many beg to differ. Seems to have originated on reddit from some of the ents.

Never watch a horror movie at a 10

[10] by HappyWafflez November 10, 2010

10

Top grade woman (= 10 out of 10). From the movie '10', featuring Dudley Moore and Bo Derek.

Look at her... she's a 10!

10 by starflier December 8, 2003

10

It's a number you idiot what are you doing searching this up you know very well what a number is.

10,9,8,7,6,5,4,3,2,1
abcdefg 10 kids are stuck in that tree

10 by qu33r b0i November 25, 2017

10

Quick and somewhat widely used word to claim someone of the oppisite sex is of the top percentile in looks, sexual skills and/or personality.

"Damn B, that BITCH IS A 10!!!!!"

10 by Brandon Wann May 13, 2005

10

Means two in the binary (base-2) numeral system.
Means three in the ternary (base-3) numeral system.
Means four in the quaternary (base-4) numeral system.
And so on...

One exception is the unary (base-1) system, where 10 probably means "WTF? ^^".

Caveman: 10 is WTF? ^^!
Computer: 10 is two!
Octopus: 10 is eight!
Modern human: 10 is ten!
The Hitchhiker's Guide to the Galaxy: 10 is thirteen!
Haxxor: 10 is sixteen!
God: 10 is infinite!

10 by Oxeye Daisy October 15, 2006

10

(1)1, 2, 3, 4, 5, 6, 7, 8, 9, 10!
(2)2 in binary

1) I can count to 10!
2) There are 10 types of people in these world: Those who understand binary; and those who don't.

10 by KhAoS November 15, 2003