ending,
termination,
conclusion the end of a word (a suffix or inflectional ending or final morpheme); "I don't like words that have -ism as an ending"
extinction -
the reduction of the intensity of radiation as a consequence of absorption and radiation
natural action,
natural process,
activity,
action a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
absorption (chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid
extinction -
no longer in existence; "the extinction of a species"
Extinction is the end of an organism or of a group of organisms, normally a species. The moment of extinction is generally considered to be the death of the last individual of the group (although the capacity to breed and recover may have been lost before this point). Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively.
OmegaWiki Dictionary
Ω
extinction The complete disappearance of a species of plant or animal from the planet.
extinction Attenuation of electromagnetic radiation emitted by astronomical objects by matter (dust and gas) between the emitting object and the observer.
