What does the Greek prefix 'therm-' signify?

The Greek prefix 'therm-' signifies heat. This prefix is derived from the Greek word 'thermos,' which means warm or hot. In various scientific and medical terms, 'therm-' is commonly used to indicate a relationship to heat. For example, in the words "thermometer" (an instrument for measuring temperature) and "thermal" (relating to heat), the prefix highlights the concept of heat. Understanding this prefix is essential for recognizing how it is used in multiple contexts related to temperature and energy, making it a critical component of vocabulary in both scientific disciplines and everyday language.