词根词缀：femto- [FEM toh]

【来源及含义】Danish and Norwegian: fifteen; a decimal prefix used in the international metric system for measurements

【相关描述】It is used in the metric [decimal] system as quadrillionth [U.S.] and thousand-billionth part [U.K.], 10^-15 [0.000 000 000 000 001]. The metric symbol for femto- is f.

【相关词根词缀】 Related "metric" families: yotta; zetta; exa; peta; tera; giga; mega; kilo; hecto; deka; deci; centi; milli; micro; nano; pico; atto; zepto; yocto.

【同源单词】femtoampere, femtogram, femtojoule, femtoliter, femtometer, femtomole