z

Definitions

General English

  • noun the last and twenty-sixth letter of the alphabet

Electronics

  • symbol forzetta-
    (written as Z)
  • symbol foratomic number
    (written as Z)
  • symbol forzepto-
  • The number of protons in the nucleus of an atom. It is also the number of electrons that surround the uncharged atom. The atomic number of carbon, for instance, is 6. Its symbol is Z. Also known as proton number.
  • A metric prefix representing 10-21. For example, 1 zeptovolt is equal to 10-21 volt. Its abbreviation is z.
  • A metric prefix representing 1021. For example, zettahertz. Its symbol is Z.

Aviation

  • symbol forZulu time
    (written as Z)

General Science

  • noun a number of positive electric charges round the nucleus of an atom, equal to the number of protons in the atom
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