Function: combining form
Etymology: International Scientific Vocabulary, from Danish or Norwegian femten fifteen, from Old Norse fimmt ā n; akin to Old English f ī ft ē ne fifteen
: one quadrillionth (10 -15 ) part of < femto second>
Function: combining form
Etymology: International Scientific Vocabulary, from Danish or Norwegian femten fifteen, from Old Norse fimmt ā n; akin to Old English f ī ft ē ne fifteen
: one quadrillionth (10 -15 ) part of < femto second>
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012