Word that comes from another word

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
late 15c., from Latin derivatus , past participle of derivare (see derive ). From 1650s as a noun.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Derivate \Der"i*vate\, a. [L. derivatus, p. p. of derivare. See Derive .] Derived; derivative. [R.] --H. Taylor. -- n. A thing derived; a derivative. [R.]

Wiktionary Word definitions in Wiktionary
Derived; derivative. n. Something derived; a derivative. v (context obsolete English) To derive.

Wikipedia Word definitions in Wikipedia
A derivate is the product of a derivatization reaction.