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• a  no longer in existence; lost or especially having died out leaving no living representatives
  an extinct species of fish
  an extinct royal family
  extinct laws and customs
• a  (of e.g. volcanos) permanently inactive
  an extinct volcano
• s  being out or having grown cold
  threw his extinct cigarette into the stream

• Till now it has not been possible to decode the genetic map of animals thought to be extinct.
• The fossils uncovered an extinct mammal that was never chronicled by the scientists.
• Scientists say the species is probably extinct, the victim of overfishing and environmental degradation on China's crowded waterway.

• nonextant
• out

• extant
• active

News & Articles

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• Two South Florida butterflies extinct
  Two South Florida butterflies appear to have joined the club no one wants to be a member of: Extinct species.        
  June 11, 2013 - Sun-Sentinel
• Two South Florida Butterfly Species Now Extinct
  South Florida and the rest of the world has lost two more butterfly species. U.S. wildlife officials said Monday the two butterfly species, historically found in South Florida, are likely extinct.
  June 11, 2013 - CBS Miami
• 'Extinct' Frog Reappears in Israel
  The Hula painted frog was declared extinct in 1996, the first time any amphibian had been declared extinct by the International Union for Conservation of Nature (IUCN), a conservation group.
  June 6, 2013 - LiveScience.com via Yahoo! News

Quotes

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• Antonin Scalia in TIME
  It is not the role of this Court to pronounce the Second Amendment extinct,Scalia wrote.
• George Lucas in FOXNews
  If knowledge is not passed down to the next generation, Lucas said, "we will become extinct."
• Jerry Wexler in International Herald Tribune
  If Atlantic had restricted itself to R&B music, I have no doubt that it would be extinct today,Wexler said.