'environmental' definitions:

Definition of 'environmental'

(from WordNet)
adjective
Of or relating to the external conditions or surroundings; "environmental factors"
adjective
Concerned with the ecological effects of altering the environment; "environmental pollution"

Definition of 'environmental'

From: GCIDE
  • environmental \environmental\ adj.
  • 1. of or pertaining to the environment; as, environmental factors. [WordNet 1.5]
  • 2. of or pertaining to the environment (definition 2); as, environmental pollution; environmental disaster; environmental cleanup; environmental deterioration. [WordNet 1.5]
  • THOUSANDS of dead fish and other marine species, suffocated by a rotting, glutinous morass which spreads over kilometres of coral reefs. This scenario has all the hallmarks of a unnatural environmental disaster resulting from environmental negligence. However this isn't the case, instead the cause -- coral spawn slick deoxygenation -- is a natural event which has the potential to occur periodically on the reefs of the West Pilbara. --Michael Borowitzka ("Natural event spawns environmental disaster" in Murdoch News, October 12, 1995)