ultracold
/ʌl.trə.koʊld/
ADJECTIVE
1. Extremely close to absolute zero
Having a temperature extraordinarily close to absolute zero, particularly in scientific conditions where matter exhibits unusual quantum-mechanical properties.
1.1. Quantum physics and scientific experiments
Used to describe temperatures approaching absolute zero in scientific experiments, particularly those designed to observe quantum-mechanical properties and unusual physical behaviors of matter.
Synonyms
- cryogenic
- subzero
- subfreezing
- frigid
- frozen
Antonyms
Examples
- The scientist conducted experiments in an ultracold chamber to observe unique physical behaviors.
- Researchers used ultracold atoms to investigate unusual quantum-mechanical phenomena.
Related Words
- absolute zero
- quantum mechanics
- quantum properties
- quantum physics
- atomic physics
- cryogenics
- temperature
- ultracold atoms
ADJECTIVE
2. Extremely cold
Having an exceptionally low temperature or producing an intense sensation of cold, far colder than ordinary cool or chilly conditions.
2.1. Weather and outdoor environments
Used to describe extremely cold weather, climates, outdoor conditions, or natural environments where temperatures are intensely low and can cause significant discomfort or physical hardship.
Synonyms
- freezing
- frigid
- arctic
- bitter
- bone-chilling
- ice-cold
- icy
- gelid
- glacial
- piercing
- numbing
- subzero
- subfreezing
- bitterly cold
- algid
Antonyms
Examples
- The expedition faced harsh conditions in the ultracold Arctic wilderness.
- They bundled up in layers to withstand the ultracold temperatures during the winter storm.
Related Words
- winter
- frost
- snow
- ice
- blizzard
- Arctic
- wind chill
- freezing temperatures
- cold snap
2.2. Storage and refrigeration
Used to describe storage facilities, freezers, or controlled environments maintained at exceptionally low temperatures to preserve sensitive materials, frozen products, or temperature-sensitive substances.
Synonyms
Antonyms
Examples
- The storage facility was designed to preserve sensitive materials in an ultracold environment.
- The freezer maintained an ultracold temperature to keep the ice cream perfectly frozen.
Related Words
- freezer
- refrigeration
- cold storage
- preservation
- temperature control
- frozen food
- cryogenic storage
- cooling system