Source : Webster's Revised Unabridged Dictionary (1913)

Bituminize \Bi*tu"mi*nize\, v. t. [imp. & p. p. {Bituminized};
   p. pr. & vb. n. {Bituminizing}.] [Cf. F. bituminiser.]
   To prepare, treat, impregnate, or coat with bitumen.

Source : WordNet®

bituminize
     v : treat with bitumen [syn: {bituminise}]