Pronunciation: (kun-dish'u-nur),[key] —n. 1. a person or thing that conditions.
2. something added to a substance to increase its usability, as a water softener.
3. a cream or liquid preparation applied to the hair or skin, esp. for its emollient qualities.
4. a trainer of athletes.
5. an air conditioner.
6. Textiles.a person who conditions fibers or fabrics.