The definition of an assemblage is the act of getting together or putting something together.(noun)
An example of an assemblage is a group of people inviting others to join them at a protest.
In art, an assemblage is the creation of sculpture through collection and unification of a variety of items that bear no relation, or the piece of art that is created as a result of this process.(noun)
An example of an assemblage is Robert Rauschenberg's Canyon, created of various materials such as wood, nails, paper, fabric, paint, metal and other items.
See assemblage in Webster's New World College Dictionary
See assemblage in American Heritage Dictionary 4
Learn more about assemblage