Dinitrogennoun
(chemistry) the normal nitrogen molecule having two atoms
Dinitrogennoun
two atoms of nitrogen as part of some other compound
Nitrogennoun
(uncountable) A chemical element (symbol N) with an atomic number of 7 and atomic weight of 14.0067.
Nitrogennoun
(uncountable) Molecular nitrogen (N2), a colorless, odorless gas at room temperature.
Nitrogennoun
(countable) A specific nitrogen within a chemical formula, or a specific isotope of nitrogen
Nitrogennoun
A colorless nonmetallic element of atomic number 7, tasteless and odorless, comprising four fifths of the atmosphere by volume in the form of molecular nitrogen (N2). It is chemically very inert in the free state, and as such is incapable of supporting life (hence the name azote still used by French chemists); but it forms many important compounds, such as ammonia, nitric acid, the cyanides, etc, and is a constituent of all organized living tissues, animal or vegetable. Symbol N. Atomic weight 14.007. It was formerly regarded as a permanent noncondensible gas, but was liquefied in 1877 by Cailletet of Paris, and Pictet of Geneva, and boils at -195.8 ° C at atmospheric pressure. Liquid nitrogen is used as a refrigerant to store delicate materials, such as bacteria, cells, and other biological materials.
Nitrogennoun
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
Nitrogen
Nitrogen is the chemical element with the symbol N and atomic number 7. It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772.