derivation

英[derɪ'veɪʃ(ə)n] 美['dɛrə'veʃən]

1. the source from which something derives (i.e. comes or issues);

"he prefers shoes of Italian derivation"

2. (historical linguistics) an explanation of the historical origins of a word or phrase

3. a line of reasoning that shows how a conclusion follows logically from accepted propositions

4. (descriptive linguistics) the process whereby new words are formed from existing words or bases by affixation: `singer' from `sing'; `undo' from `do'

5. inherited properties shared with others of your bloodline

6. drawing of fluid or inflammation away from a diseased part of the body

7. drawing off water from its main channel as for irrigation