extinct

/ɪkˈstɪŋkt/
adjective
  1. No longer in existence; having no living members (used especially for species).
    • The dodo is a famous example of an extinct animal.
    • Dinosaurs have been extinct for millions of years.
    • Many island birds became extinct after humans arrived.
  2. No longer active or burning (used for volcanoes or fires).
    • Geologists classify a volcano as extinct if it shows no signs of future activity.
    • We made sure the campfire was completely extinct before leaving.
    • The volcano is considered extinct and has not erupted in over 10,000 years.
  3. No longer in use or practiced; obsolete (used for customs, languages, or traditions).
    • Latin is an extinct language, though it influenced many modern ones.
    • The tradition of dueling is now extinct in most countries.
    • Some ancient crafts have become extinct because no one learns them anymore.