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Definition of AMBIENT. 1. : an encompassing atmosphere: environment. 2. : music intended to serve as an unobtrusive accompaniment to other activities (as in a public place) and characterized especially by quiet and repetitive instrumental melodies.ull Definition of AMBIENT. : existing or present on all sides: encompassing. See ambient defined for English-language learners. See ambient defined for kids.
Ambient temperature is usually the room temperature or the temperature of the air surrounding equipment under consideration such as a computer or power supply unit. In an environment with electronic equipment, the resultant temperature is determined by the ambient temperature as well as the power dissipated by the equipment.