Relating to, causing, or tending toward extinction; capable of extinguishing or eliminating something.
From 'extinct' + '-ive' (having the quality of). This rare adjective appears in scientific and philosophical contexts but has never been widely adopted in modern usage.
Ecologists might describe a particular habitat loss as 'extinctive' in its effects, but you'll rarely see this word—scientists prefer 'extinction-causing' or just 'extinctional' which is also barely used!
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