Main Entry: der·i·va·tion

Pronunciation: \ˌder-ə-ˈvā-shən, ˌde-rə-\

Function: noun

Date: 15th century

1 a (1) : the formation of a word from another word or base (as by the addition of a usually noninflectional affix) (2) : an act of ascertaining or stating the derivation of a word (3) : etymology 1 b : the relation of a word to its base
2 a : source, origin b : descent, origination
3 : something derived : derivative
4 : an act or process of deriving
5 : a sequence of statements (as in logic or mathematics) showing that a result is a necessary consequence of previously accepted statements

— der·i·va·tion·al \-shnəl, -shə-n^əl\ adjective