Definition of femto- in English:


Pronunciation: /ˈfɛmtəʊ/

combining form

(Used in units of measurement) denoting a factor of 10−15: femtosecond


from Danish or Norwegian femten 'fifteen'.

More definitions of femto-

Definition of femto- in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day semblance
Pronunciation: ˈsɛmbləns
the outward appearance or apparent form of something…