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Definition of femto- combining form from the Oxford Advanced Learner's Dictionary

femto-

combining form
 
/femtəʊ/
 
/femtəʊ/
(specialist)
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  1. (in units of measurement) 10-15
    • a femtosecond
    Word Originfrom Danish or Norwegian femten ‘fifteen’.
See femto- in the Oxford Advanced American Dictionary
Check pronunciation: femto-

Nearby words

trait
noun
 
 
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