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