- The definition of extinct is someone or something that has burned out, is no longer in use or no longer exists.
- An example of extinct is a volcano that is no longer erupting.
- An example of extinct is an old marriage custom in an African tribe.
- An example of extinct is dinosaurs.
The dodo is an extinct species.
extinct definition by Webster's New World
- having died down or burned out; extinguished: an extinct fire
- no longer active: an extinct volcano
- no longer in existence or use; specif., having no living descendant: an extinct species
- that no living person holds or can claim: said of offices, titles, etc.
- no longer spoken as a native language
Origin: Middle English ; from Classical Latin extinctus, exstinctus, past participle of exstinguere: see extinguish
extinct definition by American Heritage Dictionary
- No longer existing or living: an extinct species.
- No longer burning or active: an extinct volcano.
- No longer in use: an extinct custom. See Synonyms at dead.
- Law Lacking a claimant; void: an extinct title.
Origin: Middle English, from Latin exstīnctus, past participle of exstinguere, to extinguish; see extinguish.
extinct - Science Definition
- Having no living members. Species become extinct for many reasons, including climate change, disease, destruction of habitat, local or worldwide natural disasters, and development into new species (speciation). The great majority of species that have ever lived—probably more than 99 percent—are now extinct.
- No longer active or burning, as an extinct volcano.