What is "musaeum"

The Musaeum or Mouseion at Alexandria , which included the famous Library of Alexandria, was an institution founded by Ptolemy I Soter or, perhaps more likely, by Ptolemy II Philadelphus. This original Musaeum ("Institution of the Muses") was the home of music or poetry, a philosophical school and library such as Plato's Academy, also a storehouse of texts. It did not have a collection of works of art, rather it was an institution that brought together some of the best scholars of the Hellenistic world, analogous to a modern university. This original Musaeum was the source for the modern usage of the word museum.