Definition of impregnating:
(v) :
(transitive) To cause to become pregnant.
(v) :
(transitive) To fertilize.
(v) :
(intransitive, dated) To become pregnant.
(v) :
(transitive) To saturate, or infuse.
(v) :
(transitive) To fill pores or spaces with a substance.
(adj) :
(as a participle) Impregnated (all senses).