1a place where there is a lot of heat orradiation:
Many microwaves heat unevenly, leading to hot spots in the milk.
Hot spots of radioactivity were found near the power station.
2a place that is popular for entertainment or a particular activity:
They played regularly at legendary hot spots such as the UFO Club.
3a place where there is likely to be fighting or a particular problem:
The report identified eight pollution hot spots.
4TDa part of a computer image on the screen that you canclick on to make other pictures, words etc appear
5TDa place in a public building where there is a computer system with an access point, which allows people in the building with a wireless computer orbluetooth mobile phone to connect to a service such as the Internet
6especially American Englisha place where a fire can spread from
Definition of hot spot from the Longman Dictionary of Contemporary English within the topic COMPUTERS