(physics) A fault in classical physics, from the Rayleigh's Law/Rayleigh-Jeans Law outcomes at short wavelengths/high frequencies, that causes infinite amplification of shorter wavelength/higher frequency radiation inside a cavity, due to the application of equipartition theorem on black body radiation within a cavity.

An event during the oxygenation event of Earth's past, where the level of free oxygen in the environment exceeds the toleration levels of most extant anerobic life, becoming toxic to existing life, which prior to the mass production of oxygen, was an anerobic reducing environment. This is sometimes considered a mass extinction event, or the first mass extinction event, but as all life was unicellular, there is no fossil boundary to mark the event for conventional paleontology to recognize it.

A work of post-apocalyptic science fiction dealing with the adventures of a small group of people who survive the collapse of civilization relatively unscathed.

plural of cosy catastrophe

plural of climate catastrophe

The severe negative effects of climate change on both the natural world and humanity as a result of extreme weather events, sea level rise, biodiversity loss, etc.

plural of oxygen catastrophe

(military, slang) An instance of damaging a vehicle by weaponry that renders it both unusable and unrepairable.

plural of catastrophic kill

The tendency of an artificial neural network to forget previously learned information completely and abruptly upon learning new information.