biotic indexnoun [ C ]
uk/baɪˌɒt.ɪk ˈɪn.deks/us/baɪˌɑː.t̬ɪk ˈɪn.deks/specializeda way of measuring the pollution (= dirty substances) in water, e.g. a river, by counting the organisms in it
Thesaurus: synonyms and related words
Environmental issues
- air pollution
- biodegrade
- carbon capture
- carbon credits
- carbon offset
- carbon-neutral
- defoliant
- dumping ground
- eco-footprint
- ecology
- emission
- environmentally friendly
- exhaustible
- greenwash
- particulate
- photochemical smog
- preservation
- preservationist
- reclamation
- recycle
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