the process or device of adding affixes to or changing the shape of a base, thereby assigning the result to a form class that may undergo further inflection or participate in different syntactic constructions, as in forming service from serve, song from sing, and hardness from hard (contrasted with inflection).
b.
the systematic description of such processes in a given language.
7.
Linguistics.
a.
a set of forms, including the initial form, intermediate forms, and final form, showing the successive stages in the generation of a sentence as the rules of a generative grammar are applied to it.
b.
the process by which such a set of forms is derived.
Origin: 1375–1425; late Middle English derivacioun < Latin dērīvātiōn- (stem of dērīvātiō) a turning away, equivalent to dērīvāt(us) (past participle of dērīvāre;see derive, -ate1) + -iōn--ion
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
1520s (grammatical sense is oldest), from Fr. dérivation (14c.), from L. derivationem, noun of action from derivare (see derive). General meaning "origination, descent" is from c.1600.