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.
For the legendary vampire, see Count Dracula. Vlad III, known as Vlad the Impaler (Romanian: Vlad ÈepeÈ; pronunciation: [Ëvlad ËtÍ¡sepeÊ]) or Vlad Dracula (1428/1431 â 1476/77), was voivode (or prince) of Wallachia three times between 1448 and his death. He was the second son of Vlad Dracul, who became the ruler of Wallachia in 1436.