Derivation

noun

1. A leading or drawing off of water from a stream or source.
2. The act of receiving anything from a source; the act of procuring an effect from a cause, means, or condition, as profits from capital, conclusions or opinions from evidence.
3. (genealogy) The act of tracing origin or descent.

   "the derivation of a word from an Indo-European root"

4. (grammar) Forming a new word by changing the base of another word or by adding affixes to it.
5. The state or method of being derived; the relation of origin when established or asserted.