undercool

[ uhn-der-kool ]

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.

undercool

/ ˌʌndəˈkuːl /

verb

1. a less common word for supercool

Word History and Origins

Origin of undercool¹

First recorded in 1900–05; under- + cool