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ultramicrobalance

American  
[uhl-truh-mahy-kruh-bal-uhns] / ˌʌl trəˈmaɪ krəˌbæl əns /

noun

Chemistry.
  1. a balance for weighing precisely, to a hundredth of a microgram or less, minute quantities of material.


Etymology

Origin of ultramicrobalance

ultra- + microbalance