Commerce . a process of reorganizing a corporate structure whereby the capital stock of a division or subsidiary of a corporation or of a newly affiliated company is transferred to the stockholders of the parent corporation without an exchange of any part of the stock of the latter. Compare split-off ( def. 3 ) , split-up ( def. 3 ) .

any product that is an adaption, outgrowth, or development of another similar product

The paperback is a spin-off from the large hardcover encyclopedia.

a secondary or incidental product or effect derived from technological development in a somewhat unrelated area.

noun

byproduct , derivation , descendant , offshoot , outgrowth