'bioremediation' definitions:

Definition of 'bioremediation'

(from WordNet)
noun
The branch of biotechnology that uses biological process to overcome environmental problems
noun
The act of treating waste or pollutants by the use of microorganisms (as bacteria) that can break down the undesirable substances

Definition of 'bioremediation'

From: GCIDE
  • bioremediation \bi`o*re*me*di*a"tion\, n. the branch of biotechnology that uses biological processes to overcome environmental problems. [WordNet 1.6]