spin·off or spin-off 
(spĭnôf′, -ŏf′)
(spĭnôf′, -ŏf′)n.
1.
a. A divestiture by a corporation of a division or subsidiary by issuing to stockholders shares in a new company set up to continue the operations of the division or subsidiary.
b. The new company formed by such a divestiture.
2. Something, such as a product, that is derived from something larger and more or less unrelated; a byproduct.
3. Something derived from an earlier work, such as a television show starring a character who had a popular minor role in another show.