extinct

 
Pronunciation: /ɪkˈstɪŋkt, ɛk-/

adjective

  • 1(of a species, family, or other larger group) having no living members: trilobites and dinosaurs are extinct
  • no longer in existence: an extinct language the sort of girls' school that is now extinct
  • (of a title of nobility) having no valid claimant: the baronetcy became extinct
  • 2(of a volcano) not having erupted in recorded history: the islands are the remains of extinct volcanoes
  • no longer alight: his now extinct pipe

Origin:

late Middle English (in the sense 'no longer alight'): from Latin exstinct- 'extinguished', from the verb exstinguere (see extinguish)