super- + cool
supercool (third-person singular simple present supercools, present participle supercooling, simple past and past participle supercooled)
- (physics) To cool a material below its transition temperature without that transition occurring
supercool (comparative more supercool, superlative most supercool)
- (informal) Very cool; thoroughly excellent, relaxed, or fashionable.
- 2009, Bob LeVitus, Mac OS X Snow Leopard For Dummies (page 323)
- On to how to access your Home folder from a remote Mac — a supercool feature that's only bound to get more popular as the Internet continues to mature.