Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun chemistry, physics One 10-21th part of a mole, or about 600 molecules of a substance, SI symbol: zmol.
  • noun this sense?) (by extension) Loosely, a small amount of a substance, especially a countable number of atoms or molecules.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

zepto- +‎ mole

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Examples

  • This method is also highly sensitive and proteins can be identified in femtomole quantities and reaching sensitivity up to zeptomole (10

    PLoS ONE Alerts: New Articles 2009

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