Nitrify \Ni"tri*fy\, v. t. [imp. & p. p. {Nitrified}; p. pr. &
vb. n. {Nitrifying}.] [Niter + -fy: cf. F. nitrifer. See
{Niter}.] (Chem.)
To combine or impregnate with nitrogen; to convert, by
oxidation, into nitrous or nitric acid; to subject to, or
produce by, nitrification.
[1913 Webster]