Thermal
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Scientific Term
Used in science to describe processes or objects that involve heat, like in physics or environmental studies. Thermal conductivity measures how well heat passes through a material.
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Metaphoric Use
Sometimes used metaphorically to describe something as being 'hot' in a figurative sense, such as a topic. The debate on climate change has become a thermal topic recently.
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Not Always Hot
Although associated with heat, 'thermal' doesn't mean something is hot to touch, more that it relates to heat. Thermal insulation helps maintain the building's temperature.