Synonyms: nitrogen, N, atomic number 7
Definition: 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
Similar words: element, chemical element
Definition: any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
Similar words: gas
Definition: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely