heat sink

noun

: a substance or device that absorbs or dissipates especially unwanted heat (as from a process or an electronic device)

Examples of heat sink in a Sentence

Recent Examples on the Web

The material that fills the gaps between the dies is about 100 times as thermally resistant as the silicon substrate, keeping heat from flowing upward to where the processor-package’s heat sink can remove it. — IEEE Spectrum, 8 July 2026

For decades, oceans have acted as the planet’s main heat sink, absorbing 90% of the excess heat produced by humans burning fossil fuels. — Laura Paddison, CNN Money, 1 July 2026

The One features an anodized aluminum heat sink, bracket, and lanyard loop. — Justyn Newman, PC Magazine, 28 May 2026

In summer, brick, concrete, and asphalt cities are nothing short of heat sinks, baking in the high sun during the day and radiating heat back out at night. — Jeffrey Kluger, Time, 4 May 2026

Word History

First Known Use

1936, in the meaning defined above

Rhymes for heat sink

• bethink
• downlink
• groupthink
• hoodwink
• rethink
• uplink
• blink
• brink
• chink
• cinque
• clink
• dink