The T.D. unit is a standard measurement for smell intensity. The acronym was chosen to be T.D. as its not commonly known as anything else. The measure has typical values from 1 to 5, 1 being a mild stink and 5 a ghastly stench. On the odd occasion a 6 can be recorded but this is often associated with asphyxiation, leading ultimatley to death.
Bob: Hey man keep away from that guy his rocking like 5 T.D. units!

Jim: Nah man i can handle it.........holy shit he stinks!!!!!!!!!! I can't breathe!!!!!!!!!!!!!!!!!!!!!!!

Bob: Dude it must be a 6 then, better get you to a hospital.
by hesti October 11, 2010
Top Definition
The T.D. unit is a new unit to enter the SI system of units. The T.D., otherwise known as the Toan-Dang, is a way of measuring stink/pong levels of someone or something.
A T.D. unit gives you a way of measuring odours. 0 T.D.'s indicates a neutral atmosphere, where as the definition of 1 T.D. is the peak of one's body odour. 2 T.D.'s would be twice as worse and so on. 4 T.D.'s is critically bad where 5 T.D.'s is death.
by grouch johan October 22, 2008
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.