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.