1
linguistics
a(1)
: the formation of a word from another word or base (as by the addition of a usually noninflectional affix)
"Strategize" was formed by derivation from "strategy."
(2)
: an act of ascertaining or stating the derivation of a word
3
: something that originates from something else : something derived : derivative
more like an exact copy than a derivation
4
: an act or process of deriving
debating the possible derivation of birds from dinosaurs
5
logic
: a sequence of statements showing that a result is a necessary consequence of previously accepted statements
derivational
adjective
… subjects' ability to auditorily recognize the correct form of derivational relationships where consonant and vowel alternation occurs.
—
Robert A. Barganz
derivationally
adverb
derivationally related words
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Merriam-Webster unabridged