Pyridinium Tribromide is used as a brominating agent for organic synthesis especially for pharmaceuticals and hormones. It can be replaced for n-Bromosuccinimide. (N-Bromo derivatives and ammonium tribromides are mainly used as brominating agents)
Top definition. Vlad. Vlad is usually a Russian name, sometimes romanian, and usually is an athletic all around great guy that is good at everything. He is known to have a big penis and is a legend in bed. He has an amazing body and really funny. He is very popular especially with females...fine females.
Vlad The Impaler was debuted at a session for BBC Radio 1 in April 2009. Since then it has always been a permanent part of the set, sometimes as an opener or the first song of the encore during the West Ryder Pauper Lunatic Asylum Tour.