derivation
/ˌderɪˈveɪʃn; ˌdɛrə`veʃən/ n
1 [U] development or origin (esp of words) 发展; 起源; （尤指词语的）派生
the derivation of words from Latin 词语自拉丁文的派生
a word of French derivation 由法语派生的词.
2 [C]
(a) first form and meaning of a word 词源.
(b) later change of form and meaning 派生的词形和词义
give the derivations of words 指出词语的派生词形和词义.