- micromicra (µµ)
- = µµ (micromicron)Ex. The grooves on a 78 rev/min audio disc are 150 µµ (micromicron) apart.
Spanish-English dictionary. 2013.
micromicra (µµ)
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micromicra — n. unit of length equal to one millionth of a micron … English contemporary dictionary
