<p><strong>Noun</strong></p><ul><li>A person or thing that conditions.</li><li>Something added to a substance to increase its usability, as a water softener.</li><li>A cream or liquid preparation applied to the hair or skin, especially for its emollient qualities.</li><li>A trainer of athletes.</li><li>An air conditioner.</li><li>Textiles: a person who conditions fibers or fabrics.</li></ul>