释义 |
femto-
femto-pref. One quadrillionth (10-15): femtovolt. [From Danish and Norwegian femten, fifteen, from Old Norse fimmtān; see penkwe in Indo-European roots.]femto- prefix (Units) denoting 10–15: femtometer. Symbol: f [from Danish or Norwegian femten fifteen]femto- a combining form used in the names of units of measure that are one quadrillionth (10−15) the size of the unit denoted by the base word: femtogram. [< Dan, Norwegian femt(en) fifteen + -o-] femto-A prefix meaning 1 quadrillionth (10-15).femto-
femto-[′fem·tō] (science and technology) A prefix representing 10-15, which is 0.000 000 000 000 001, or one-thousandth of a millionth of a millionth. AcronymsSeeF |