su·per·cool / ˌsoōpərˈkoōl/ • v. [tr.] Chem. cool (a liquid) below its freezing point without solidification or crystallization. ∎ [intr.] Biol. (of a living organism) survive body temperatures below the freezing point of water. • adj. inf. extremely attractive, impressive, or calm: the supercool tracks in this collection.
"supercool." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (November 14, 2018). https://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/supercool
"supercool." The Oxford Pocket Dictionary of Current English. . Retrieved November 14, 2018 from Encyclopedia.com: https://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/supercool