The Collaborative International Dictionary of English v.0.48:

ozonification \o*zo`ni*fi*ca"tion\
   ([-o]*z[=o]`n[i^]*f[i^]*k[=a]"sh[u^]n), n. [Ozone + L.
   -ficare to make. See -fy. ] (Chem.)
   The act or process of producing, or of subjecting to the
   action of, ozone.
   [1913 Webster]