roizen 

a measure of reaction scale indicating 1 mg or less of substrate. may be used in concurrence with metric prefixes. abbr = Rzn

I set up this Horner-Wadsworth-Emmons reaction on a Kiloroizen scale.

roizen by thehappychemist April 5, 2009

Raizen 

One of the three rulers of Makai appearing in the later episodes of Yu Yu Hakusho, he is the ancestral father of Yuusuke Urameshi.
One of the Mazuku, the strongest demons.
Raizen and his people used to eat humans for food, though after falling in love with one, he vowed to never eat one again, which brought him to his later death after teaching Yuusuke.
He took control of Yuusuke in order to kill Sensui.

Yuusuke: "What's that rumbling sound?"
Hokashin: "That is the growling of Lord Raizen's empty stomach. We use it to mark the passing of time."

Raizen by Draith April 12, 2005

Rozenism

The art of redefining words until you get an interpretation that suits your intentions.

I started an argument with him about whether or not it was raining. Then he used Rozenism to make it seem like getting wet from water falling out of the clouds actually meant that it was dry.

Rozenism by TAATheGreat April 26, 2017

Roozen 

A chapped, dry and red inflammed butthole.

Excuse me everybody I have to take go to the bathroom and take a foamy crap and wipe my roozen

Roozen by chris121212 June 1, 2005

Rozentaling

When one person or a group of people go out in public and perform acts that by others are seen as extremely cool.

"Tom and I are going to go rozentaling outside the supermarket later today."

Rozentaling by sphillips609 March 7, 2010

raizen 

1. Used to eat humans
2. The ancestor of Yusuke Urameshi
3. Dies after teaching Yusuke

Raizen is one of the three lords of makai.

raizen by Bailong and Kasuhiro February 23, 2005

Roizin 

A severe rash located around the males penis, that can be sexually transmited through intercourse

"Yo what the hell is that rash on your dick!"
"Oh it's just roizin. I got it from Beata."

Roizin by Cherk May 11, 2017