The Holocaust was the systematic persecution and murder of approximately six million Jews by the Nazi regime in Germany from 1933 to 1945. The term "Holocaust" comes from the Greek word meaning "sacrifice by fire" and refers to the Nazis' planned slaughter of the Jewish people. In addition to Jews, the Nazis also targeted Gypsies, homosexuals, Jehovah's Witnesses, disabled people, and others who resisted the Nazi regime, sending many to forced labor camps and murdering others. It is estimated that a total of 11 million people were killed during the Holocaust, six million of whom were Jewish.