Geon

Geon is a term employed in several areas of knowledge:

In geology, geons are numerically specified geologic time intervals (geological eons) 100 million years long, counted backward from the present.
In physics, a geon is a hypothetical gravitational wave packet confined to a compact region by the gravitational attraction of its own field energy.
In psychology, geons (short for 'geometric ions') are geometrical primitives out of which everyday objects can be represented, as suggested by psychologist Irving Biederman.

Additionally:

Geon is short for Geonim, rabbis in the medieval era.
Geon is a character from the "King of the Monsters" series of video games.
Geon: Emotions, a video game for Xbox 360's Xbox Live Arcade service
Geon (video game) a video game for PlayStation 3's PlayStation Network and Nintendo Wii.

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