picometer[pē′kə mēt′ər, pī′-]
picometer definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
one trillionth of a meter: abbrev. pm
Brit. sp. picometre
picometer - Computer Definition
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One trillionth of a meter. Pronounced "pee-co-meter," picometers are used to measure atomic structures. See nanometer.
picometer - Medical Definition
noun Abbr. pm
One-trillionth (10-12) of a meter.