Retin-A (tretinoin) is a form of vitamin A that helps the skin renew itself. The Retin-A and Avita brands of tretinoin are used to treat acne. The Renova brand of tretinoin is used to reduce the appearance of fine wrinkles and mottled skin discoloration, and to make rough facial skin feel smoother. Retin-A may also be used for purposes not listed in this medication guide.
Waste Stream. The total flow of solid waste from homes, businesses, institutions, and manufacturing plants that is recycled, burned, or disposed of in landfills, or segments thereof such as the residential waste stream or the recyclable waste stream..
Full Definition of WASTE. 1. a: a sparsely settled or barren region: desert b: uncultivated land c: a broad and empty expanse (as of water). 2. : the act or an instance of wasting: the state of being wasted.3. a: loss through breaking down of bodily tissue b: gradual loss or decrease by use, wear, or decay. 4. waste. noun \ËwÄst\. Tweet. : loss of something valuable that occurs because too much of it is being used or because it is being used in a way that is not necessary or effective.