English
extinctic
From extinct + -ic.
Formed from extinct + -ic
Proto-Indo-European *stengʷ- ‘to push’
Latin stinguō ‘to extinguish, put out, quench’
Latin exstinguō ‘to extinguish, put out, quench’
Latin extīnctus ‘extinguished, quenched’
Middle English extinct ‘eliminated, eradicated, extinguished’
English extinct
Today it means
adj Of, or related to extinction.
Language periods are conventional ranges, not dates for this word.
Etymograph / extinctic