Definition of derivation noun from the Oxford Advanced Learner's Dictionary

  

derivation

 noun
noun
BrE BrE//ˌderɪˈveɪʃn//
 
; NAmE NAmE//ˌderɪˈveɪʃn//
 
[uncountable, countable]
 
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the origin or development of something, especially a word a word of Greek derivation Word Origin late Middle English (denoting the drawing of a fluid, especially pus or blood; also in the sense ‘formation of a word from another word’): from Latin derivatio(n-), from the verb derivare, from de- ‘down, away’ + rivus ‘brook, stream’.
See the Oxford Advanced American Dictionary entry: derivation