liquid nitrogen

Noun
  1. Nitrogen in a liquid state (synset 114964888)
    is a type of:
    • atomic number 7, n, nitrogen - a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues
    • cryogen - a liquid that boils at below -160 C and is used as a refrigerant

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