adjective
- extremely cool in temperature
- extremely fashionable, impressive, or admirable
Usage: informal
Examples
- The ultracool temperatures in the laboratory were necessary for the experiment.
- Scientists discovered an ultracool dwarf star in a nearby galaxy.
- That new skateboard trick was ultracool!
- She has an ultracool vintage jacket from the 1980s.
- The ultracool air conditioning made the room comfortable.
- His ultracool attitude impressed everyone at the party.