What is the meaning of derivation?

noun

• The source or origin from which something derives (i. E. Comes or issues. )
  • usage: "he prefers shoes of Italian derivation"; "music of Turkish derivation"
• Historical linguistics. ( an explanation of the historical origins of a word or phrase)
  • synonyms: deriving, etymologizing
• A line of reasoning that shows how a conclusion follows logically from accepted propositions.
• Descriptive linguistics. ( the process whereby new words are formed from existing words or bases by affixation)
  • usage: "`singer' from `sing' or `undo' from `do' are examples of derivations"
• Inherited properties shared with others of your bloodline.
  • synonyms: ancestry, lineage, filiation
• Drawing of fluid or inflammation away from a diseased part of the body.
• Drawing off water from its main channel as for irrigation.
• The act of deriving something or obtaining something from a source or origin. .