Definition: Hoydened refers to a specific type of cloud in the atmosphere, which is characterized by its high opacity and high temperature. These clouds are often associated with high levels of radiation and can have significant impacts on the Earth's climate system. The Hoyden effect, also known as the Hoyden effect or Hoyden's law, is a scientific theory that describes how solar radiation interacts with certain types of clouds. According to this theory, when sunlight hits these clouds, it is absorbed by their molecules