| clean room | <cell culture> A room in which contamination is limited to a specific maximum level to facilitate the manufacture of sterile and high purity products, to protect personnel, equipment, and products from microbial contamination and to prevent the escape of hazardous particles into the environment. (14 Nov 1997) |
|---|---|
| cleaning | In dentistry, a procedure whereby accretions are removed from the teeth or from a dental prosthesis. See: dental prophylaxis. Ultrasonic cleaning, in dentistry, the use of a high-frequency vibrating point to remove deposits from tooth structure; also the process of cleaning dentures by placing them in a special liquid in a container that generates high-frequency vibrations. (05 Mar 2000) |
| cleaning-in-place | <procedure> Cleaning and sterilising a bioreactor system without dismantling it. (14 Nov 1997) |
| cleansing cream | A form of cold cream used to remove grime and cosmetics from the skin. (05 Mar 2000) |