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1The state or process of being or becoming extinct.‘the extinction of the great auk’[count noun] ‘mass extinctions’
dying out, disappearance, vanishing, deathextermination, destruction, elimination, eradication, annihilationView synonyms
- ‘We're facing critical mass extinctions across a whole variety of ecosystems once the two degree level has been crossed, from coral reefs to rainforests.’
- ‘There have been five major mass extinctions and more than 20 minor mass extinctions.’
- ‘Each event includes one or more datum points when extinctions and other biotic changes took place.’
- ‘Unlike previous mass extinctions this current episode is due to the disruptive activities of just one species, man.’
- ‘Scientists are sharply divided over what caused the extinction.’
- ‘But how do mass extinctions perturb these systems in the first place?’
- ‘Note that several Cambrian and early Ordovician mass extinctions are not shown here.’
- ‘I recall hearing some scientist mention that mass extinctions seem to occur in very ordered cycles.’
- ‘There have been at least five mass extinctions till now, all by natural forces.’
- ‘The result will be a series of mass extinctions and a dramatic fall in the planet's biodiversity, as well as its ability to support humankind.’
- ‘During these ice ages, the decrease in global temperature led to mass extinctions.’
- ‘Globally, diversity naturally has increased over time, though the great mass extinctions have decreased it for a while.’
- ‘Are we headed for mass extinctions for animal, bird and plant life?’
- ‘Global mass extinctions are usually explained by one or more physico-chemical causes.’
- ‘He downplayed the importance of developmental constraints, of mass extinctions, and species selection.’
- ‘Some explanations for extinctions and evolution include strikes by asteroids or comets.’
- ‘We have more difficulty with the concept of mass extinctions.’
- ‘Prominent biologists say we're on par with the five previous mass extinctions in the history of life on earth.’
- ‘Marine fossil evidence tells of numerous extinctions, global mass extinction, and geochemical events.’
- ‘Regardless of the variables he plugged in, the presence of human hunters triggered mass extinctions.’
- 1.1The wiping out of a debt.‘a private debt extinction fund’
- ‘The principle of automatic extinction of the claim/debt on confusion has adverse consequences in the capital markets.’
- ‘The policy of Immediate debt extinction was initiated by Gallalin.’
Reduction to zero in the intensity of light or other radiation as it passes through a medium, due to absorption, reflection, or scattering.‘ultraviolet extinction’
- ‘The concentration was employed to transform the experimentally obtained absorption into extinction coefficient spectra.’
- ‘Will improved classification schemes allow better understanding of extinction and radiation events?’
- ‘In addition, it may be due to possible variation in the light extinction coefficient between seasons or during the crop growth period.’
- ‘It is evident from this figure that with increasing (leaf angle) the light extinction in the leaf community decreases.’
- ‘The pattern of turnover within a stage is important for understanding the mechanisms of radiation and extinction.’
Late Middle English: from Latin exstinctio(n-), from exstinguere quench (see extinguish).
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