ˌderɪˈveɪʃən n. 1
the act or an
instance of deriving or obtaining
from a
source; the process of
being derived. 2 a the
formation of a
word from
another word or from a root. b a
derivative. c the
tracing of the
origin of a word. d a
statement or
account of
this. 3
extraction,
descent. 4
Math. a
sequence of statements
showing that a
formula,
theorem,
etc., is a
consequence of previously accepted statements. øøderivational adj. [F d÷rivation or L derivatio (as DERIVE)]