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A metric unit of length equal to one quadrillionth of a meter
Answer for the clue "A metric unit of length equal to one quadrillionth of a meter ", 10 letters:
femtometer
Word definitions for femtometer in dictionaries
WordNet
Word definitions in WordNet
n. a metric unit of length equal to one quadrillionth of a meter [syn: femtometre , fermi ]
Wiktionary
Word definitions in Wiktionary
n. (alternative spelling of from=US femtometre dot=: English) A length of 10 -15 of a meter, 1 quadrillionth of a meter.