The term 'Subject to Excessive Temperature' can be summarized by the crossword solution 'OVERHEAT, ' which is an 8-letter word. Overheating occurs when a device or object is exposed to temperatures that are too high for it to handle, leading to damage or malfunction. This can happen in both natural and man-made environments, and can be caused by a variety of factors, such as inadequate cooling systems, excessive heat exposure, or a lack of proper maintenance.