chemical barriers


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chemical barriers

1. The chemical characteristics of certain areas of the body that oppose colonization by microorganisms. The acidity of gastric juice, for example, prevents colonization by most disease-causing germs.
2. A contraceptive cream, foam, jelly, or suppository that contains chemical spermicides.
See also: barrier
References in periodicals archive ?
FIT Fruit and Vegetable Wash is made from 100 percent all-natural ingredients that remove 98 percent more wax, residues, pesticides and chemical barriers from produce than by washing with water alone.
The elegant formulas feature both physical and chemical barriers for thorough broad-spectrum UV protection.
You can also form a chemical barrier to stop foraging ants.

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