vitiation

In the former a leaky joint may cause the vitiation of the surrounding air as the producer-gas escapes; in the suction apparatus the same fault simply causes more air to be drawn in.

Scientific men deal with facts, look to them for guidance, and must suppose that thought and fact pass into each other directly, and without vitiation or deflection.

When the atmosphere is vitiated, the oxygenating processes are diminished in ratio to the vitiation.

There is the inefficiency of the syllogism, and also the vitiation produced by its employment.

In Everope is seen the extremity to which the vitiation here mentioned by the great moralist may sometimes be carried.