Field of science dealing with matter at very low temperatures. In filtration, the extremely low temperature negates the use of many media, gaskets and certain type housings.
Pertaining to extreme cold. A cryogen is a material which will create extremely cold conditions. Cryogenics is the study of extreme cold. In infrared, cryogenics usually refers to the means used to reduce the detector temperature to a useful value. Temperatures less than 200 K could be considered cryogenic.
The branch of physics relating to the effects and production of very low temperatures; as applied to living organisms, preservation in a dormant state by freezing, drying, or both.