termisk

Termisk is an adjective used in Norwegian, Danish, Swedish and some other Scandinavian languages to describe phenomena related to heat or temperature. In English, the closest equivalent is thermal. The term appears in science, engineering and everyday language to denote properties, processes, or systems driven by heat.

In science, termisk describes heat transfer by conduction, convection and radiation, as well as related concepts such as thermal energy, temperature and thermal expansion. The term is central to thermodynamics and heat transfer theory, which govern how energy moves and how materials respond to temperature changes.

Etymology and usage: The word derives from the Greek thermos, meaning heat, via the Latin root thermus, and was adopted into Scandinavian languages as termisk to form compound adjectives and nouns related to heat. In technical writing, termisk is used to distinguish heat-related properties from other physical properties; in climate, building science and engineering contexts, termisk performance or termisk behavior refers to how systems behave with respect to heat, insulation, losses and energy efficiency.

Related topics include thermal energy, thermodynamics, heat transfer, and thermal conductivity.