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Vocabulary Entry
picometer
|noun
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N
noun
A picometer is a unit of length in the metric system, equal to one trillionth of a meter (10^-12 meters).
Example Sentences
"The diameter of a hydrogen atom is about 120 picometers."
"Nanotechnology often deals with measurements in the picometer range."
"Scientists use picometers to evaluate distances at the atomic level."