Definition

1. Noun:
   • Nitrogen in a liquid state: A cryogenic fluid where the element nitrogen exists in a liquid form, produced by cooling nitrogen gas to an extremely low temperature.

Usage

• Noun:
  • Liquid nitrogen is used as a primary example of a cryogenic substance. It is commonly employed in scientific, medical, and industrial contexts for its extremely cold temperature.
  • It is typically stored in specialized insulated containers called Dewar flasks to minimize evaporation.

Examples

• Noun:
  • The laboratory uses liquid nitrogen to flash-freeze biological samples.
  • Liquid nitrogen boils at -196 degrees Celsius at atmospheric pressure.
  • Handling liquid nitrogen requires proper safety equipment like gloves and face shields.

Advanced Usage

• "To be stored in liquid nitrogen": Refers to the long-term preservation of materials, such as cells, tissues, or genetic samples, by submerging them in this cryogenic fluid.
  • The sperm sample was stored in liquid nitrogen for future use.

Variants and Related Words

• Cryogen (n): A general term for a substance, like liquid nitrogen, used to produce very low temperatures.
• Nitrogen (n): The gaseous chemical element (N₂) from which the liquid form is derived.
• Cryogenic (adj): Relating to or involving very low temperatures.

Synonyms

• Cryogenic fluid: A substance used for its extremely low-temperature properties.
• LN₂: A common abbreviation used in scientific and technical contexts.

Notes on Meaning

• The term liquid nitrogen refers specifically to the physical state of the element nitrogen. It is not a different chemical compound but nitrogen (N₂) in a different phase.
• Its primary defining property is its extremely low boiling point, which makes it invaluable for creating freezing environments, preserving perishable items, and in various cooling applications.

Noun

1. nitrogen in a liquid state