The Collaborative International Dictionary of English v.0.48:

Inceration \In`cer*a"tion\, n. [L. incerare to smear with wax;
   pref. in- in + cerare to wax, fr. cera wax: cf. F.
   inc['e]ration.]
   The act of smearing or covering with wax. --B. Jonson.
   [1913 Webster]