derivation

noun

• 1the obtaining or developing of something from a source or origin:the derivation of scientific laws from observation
• the formation of a word from another word or from a root in the same or another language.
• origin; extraction:music of primarily Turkish derivation
• something derived; a derivative: the derivation “sheepish” has six definitions

• 2 Linguistics in generative grammar, the set of stages that link the abstract underlying structure of an expression to its surface form.

• 3 Mathematics the process of deducing a new formula, theorem, etc., from previously accepted statements.
• a sequence of statements showing that a formula, theorem, etc., is a consequence of previously accepted statements.