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.
Count Dracula, a fictional character in the Dracula novel, was inspired by one of the best-known figures of Romanian history, Vlad Dracula, nicknamed Vlad Tepes (Vlad the Impaler), who was the ruler of Walachia at various times from 1456-1462.