undercool

American  

[uhn-der-kool] / ˌʌn dərˈkul /

verb (used with object)

1. Chemistry.

   1. to cool less than necessary for a given process or purpose.

   2. to supercool.

2. Metallurgy.  to cool (molten metal) without forming crystals to a temperature below that at which crystallization normally takes place.

   Metal must be absolutely still to be undercooled.

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undercool British  

/ ˌʌndəˈkuːl /

verb

1. a less common word for supercool

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Etymology

Origin of undercool

First recorded in 1900–05; under- + cool