
1) Completely gone 2) Dead 3) Describing the great auk 4) Extinguished 5) Gone 6) Gone for good 7) Gone forever 8) Gone the way of the dinosaurs 9) Having ceased eruption 10) Having died out 11) Like dodos and dinosaurs 12) Like ground sloths 13) Like homo floresiensis 14) Like the dinosaurs 15) Like the moa
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https://www.crosswordclues.com/clue/extinct

1) Dead 2) Moa 3) Nonexistent 4) Nonextant
Found on
https://www.crosswordclues.com/clue/extinct

no longer in existence. Once a species is extinct, all individuals within this species have forever vanished from the planet.
Found on
http://idahoptv.org/dialogue4kids/season8/wolves/glossary.cfm

• (a.) Without a survivor; without force; dead; as, a family becomes extinct; an extinct feud or law. • (a.) Extinguished; put out; quenched; as, a fire, a light, or a lamp, is extinct; an extinct volcano. • (v. t.) To cause to be extinct.
Found on
http://thinkexist.com/dictionary/meaning/extinct/

A volcano that is not presently erupting and is not likely to do so for a very long time in the future.
Found on
http://volcano.oregonstate.edu/glossary/1

Having completely died out of existence.
Found on
http://www.coastalplainsreptiles.com/glossary.htm

An animal species that is extinct has died out. Most animal species that ever existed have gone extinct, including all the dinosaurs.
Found on
http://www.enchantedlearning.com/subjects/dinosaurs/glossary/

No longer in existence.
Found on
http://www.encyclo.co.uk/local/20085

a plant or animal species may entirely cease to exist. Recent examples are the dodo, a large flightless bird which used to live as recently as two hundred years ago, on the island of Mauritius. There are today many species of birds, flowers, fish, insects, large mammals, including certain types of whale, which are threatened with extinction, most a...
Found on
http://www.encyclo.co.uk/local/20169

As defined by the IUCN, extinct taxa are species or other taxa that are no longer known to exist in the wild after repeated search of their type of locality and other locations where they were known or likely to have occurred.
Found on
http://www.encyclo.co.uk/local/20945

No longer in existence.
Found on
http://www.encyclo.co.uk/local/21498

(Variation and inheritance) species of organism that is no longer living
Found on
http://www.encyclo.co.uk/visitor-contributions.php

Living specimens no longer exist. (cf extant)
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Ex·tinct' adjective [ Latin
extinctus ,
exstinctus , past participle of
extinguere ,
exstinguere . See
Extinguish .]
1. Extinguished; put out; quenched; as, a fire, a light, or a lamp, is
extinct ; an
extinct volcano. « Light, the prim...
Found on
http://www.encyclo.co.uk/webster/E/96
Ex·tinct' transitive verb To cause to be extinct. [ Obsolete]
Shak. Found on
http://www.encyclo.co.uk/webster/E/96

no longer activeÂ
Found on
http://www.graduateshotline.com/list.html

a species in which all living examples have died. A species that no longer exists in life.
Found on
http://www.kingsnake.com/articles/Glossary.html

No longer in existence. Once a species is extinct, all individuals within this species have forever vanished from the planet.
Found on
http://www.wolf.org/wolves/learn/basic/glossary.asp

No longer in existence
Found on
https://birds.iitk.ac.in/glossary?page=66

No longer in existence; lost or having died out
Found on
https://sciencetrek.org/sciencetrek/topics/amphibians/glossary.cfm

no longer exists
Found on
https://sciencetrek.org/sciencetrek/topics/endangered_species/glossary.cfm

having no living members of the species or family anywhere on earth
Found on
https://sciencetrek.org/sciencetrek/topics/wildlife/glossary.cfm
out(p) adjective being out or having grown cold; `threw his extinct cigarette into the stream`; `the fire is out`
Found on
https://www.encyclo.co.uk/local/20974

no longer in existence. An animal or plant facing extinction is one in danger of vanishing forever from our world
Found on
https://www.encyclo.co.uk/local/22350

no longer in existence; that has ended or died out: an extinct species of fish. · no longer in use; obsolete: an extinct custom. · extinguished; quenched; not burning. · having ceased eruption; no longer active: an extinct volcano.
Found on
https://www.infoplease.com/dictionary/extinct
No exact match found.