i Register
In some senses, impregnant is marked as obsolete. Watch for register when choosing this word.
adj
Not pregnant; unfertilized or infertile.
noun
That which impregnates.
It is the Pole , to which we turn , and our sympathizing Judgements seldom decline from the direction of this Impregnant
that which is impregnated
The impregnation of reinforced and prestressed concrete highway structures using hydrophobic pore-lining impregnants.