atomic number 7

Definitions of atomic number 7
  1. noun
    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
    synonyms: N, nitrogen
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    types:
    azote
    an obsolete name for nitrogen
    liquid nitrogen
    nitrogen in a liquid state
    type of:
    chemical element, element
    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
    gas
    a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
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