/ ˈfemtəʊ; NAmE -toʊ/ combining form
( technical ) (in units of measurement) 10 -15 :
a femtosecond
••
WORD ORIGIN
from Danish or Norwegian femten fifteen.
/ ˈfemtəʊ; NAmE -toʊ/ combining form
( technical ) (in units of measurement) 10 -15 :
a femtosecond
••
WORD ORIGIN
from Danish or Norwegian femten fifteen.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005