Diamorphine is another name for heroin.
Other synonyms diacetylmorphine, morphine diacetate, street names: H, smack, junk, horse, and brown.
Diamorphine is made by the chemical acetylation of morphine, which is derived from natural opium sources. The word morphine was coined by German apothecary Friedrich Sertürner around 1816 alluding to Morpheus Ovid’s name for the god of dreams (origin Greek “morphe” meaning form, shape, beauty. The word heroin was also coined in Germany, in 1898, as trademark for the morphine substitute invented by Friedrich Bayer & Co.