The passenger pigeon became extinct in the early twentieth century after overhunting and habitat loss reduced a vast population to nothing.
过度捕猎与栖息地丧失把庞大的旅鸽种群消耗殆尽，这一物种在二十世纪初灭绝。
Which choice best defines “extinct”?
A — No longer existing. “extinct” means no longer existing.
Which word means “no longer existing”?
A — extinct. “extinct” means no longer existing.
extinct — no longer existing. In Chinese: 灭绝的.
extinct is pronounced /ɪkˈstɪŋkt/.
The passenger pigeon became extinct in the early twentieth century after overhunting and habitat loss reduced a vast population to nothing. (过度捕猎与栖息地丧失把庞大的旅鸽种群消耗殆尽，这一物种在二十世纪初灭绝。)
vanished, defunct, bygone — all close in meaning to extinct (no longer existing).
living, extant — each the opposite of extinct (no longer existing).
Yes. extinct is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
ex(out)+tinct(stab).