Longman Dictionary of Contemporary English homepage

ecological

 adjective
     
Related topics: Biology, Environment and waste
e‧co‧lo‧gi‧cal [only before noun]
1SGE connected with the way plants, animals, and people are related to each other and to their environment [↪ environmental]:
an ecological disaster
2SGE interested in preserving the environment [↪ environment]:
ecological groups
—ecologically adverb:
an ecologically-sound production process
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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