bioremediation n 1: the branch of biotechnology that uses biological process to overcome environmental problems 2: the act of treating waste or pollutants by the use of microorganisms (as bacteria) that can break down the undesirable substances
bioremediation \bi`o*re*me*di*a"tion\, n. the branch of biotechnology that uses biological processes to overcome environmental problems. [WordNet 1.6]