undercool

/ˌʌndərˈkuːl/
verb
  1. To cool something less than necessary or to a temperature that is too low for a desired process.
    • The recipe warns not to undercool the sugar mixture or it won't harden.
    • If you undercool the engine, it may not run efficiently.
    • Be careful not to undercool the greenhouse plants during the night.
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What does "undercool" mean? | whatsthatwordmean | whatsthatwordmean