Definition of "Derivation" :

noun: the act of deriving something or obtaining something from a source or origin

noun: drawing off water from its main channel as for irrigation

noun: drawing of fluid or inflammation away from a diseased part of the body

noun: inherited properties shared with others of your bloodline

noun: a line of reasoning that shows how a conclusion follows logically from accepted propositions

noun: (historical linguistics) an explanation of the historical origins of a word or phrase

noun: the source or origin from which something derives (i.e. comes or issues)

"He prefers shoes of Italian derivation."

noun: (descriptive linguistics) the process whereby new words are formed from existing words or bases by affixation

"Singer' from sing' or undo' from do' are examples of derivations."