Generally, a derivative is a thing that is based on, or created from, a basic or primary source.
- For an account of derivatives in differential calculus, see derivative (mathematics) and many generalizations at derivative (generalizations).
- In linguistics and etymology, a derivative is a word that is formed from a more basic word.
- In chemistry a derivative is a compound that is formed from a similar compound.
- In finance, a derivative contract is one whose value is derived from that of one or more underlying securities, commodities or other quantities such as the weather.
- A derivative work is a modification of an original work, such as a book, a play, a movie a musical composition, etc. For example, movie based on a novel is a derivative work.