- the act of extinguishing.
- the fact or condition of being extinguished or extinct.
- suppression; abolition; annihilation: the extinction of an army.
- the act or process of becoming extinct; a coming to an end or dying out: the extinction of a species.
- the reduction or loss of a conditioned response as a result of the absence or withdrawal of reinforcement.
- the diminution in the intensity of starlight caused by absorption as it passes through the earth's atmosphere or through interstellar dust.
- the darkness that results from rotation of a thin section to an angle (extinction angle ) at which plane-polarized light is absorbed by the polarizer.
- the act of making extinct or the state of being extinct
- the act of extinguishing or the state of being extinguished
- complete destruction; annihilation
- reduction of the intensity of radiation as a result of absorption or scattering by matter
- the dimming of light from a celestial body as it passes through an absorbing or scattering medium, such as the earth's atmosphere or interstellar dust
- a process in which the frequency or intensity of a learned response is decreased as a result of reinforcement being withdrawn
