extinction
ik stingk shuhn
- n no longer active; extinguished
the extinction of the volcano - n no longer in existence
the extinction of a species - n the reduction of the intensity of radiation as a consequence of absorption and radiation
- n complete annihilation
they think a meteor cause the extinction of the dinosaurs - n a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
- n the act of extinguishing; causing to stop burning
the extinction of the lights
- Shizuo Kambayashi AP But it turns out that even during the relatively peaceful eras between global calamities, during what is known as background extinction, whole families of .
- As demand for sushi threatens bluefin tuna with extinction, governments adopt quotas and activists threaten a boycott.
- A new study finds that the risk for extinction isn't random it tends to run in evolutionary families, wiping out groups of species at a time.