WordReference Random House Unabridged Dictionary of American English © 2026
un•der•cool
(un′dər ko̅o̅l′),USA pronunciation v.t.
- Chemistry
- to cool less than necessary for a given process or purpose.
- to supercool.
- Metallurgyto 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.
- under- + cool 1900–05
'undercool' also found in these entries (note: many are not synonyms or translations):