definition of ivan iv the terrible
Ivan Vasilevich; 3 September [ O.S. 25 August] 1530 â 28 March [ O.S. 18 March] 1584), commonly known as Ivan the Terrible (Russian: Ð¸Ð²Ð°ÌÐ½ Ð³ÑÐ¾ÌÐ·Ð½ÑÐ¹â (helpÂ·info) , Ivan Grozny), was the Grand Prince of Moscow from 1533 to 1547 and Tsar of All the Russias from 1547 until his death.