heat sink
heat sink Lexical Profile
• noun
A physical device or substance designed to absorb and dissipate heat from a hot object, such as a computer processor or other electronic component, to prevent overheating.
"The technician applied thermal paste before securely attaching the aluminum heat sink to the motherboard's processor."
An expansive environment or medium, such as an ocean or the atmosphere, that absorbs and stores thermal energy from a system without undergoing a significant change in temperature.
"The world's oceans act as a massive natural heat sink, absorbing much of the excess thermal energy generated by climate change."
Word Origin & Etymology
A compound of 'heat' and 'sink' (in the sense of a place where matter or energy is directed and absorbed), emerging in thermodynamics and electrical engineering contexts in the mid-20th century.