A Hasidic rebbe () is generally taken to mean a great leader of a Hasidic dynasty, also referred to as "Grand Rabbi" in English or an "ADMOR", a Hebrew acronym for "Adoneinu-Moreinu-veRabbeinu" ("our lord/master, teacher, and rabbi"). Outside of Hasidic circles, the term "Grand Rabbi" has been used to refer to a rabbi with a higher spiritual status. The practice became widespread in America in the early 1900s when Hasidic rebbes began to emigrate to the United States, and was derived from the German "Grossrabbiner".