词根词缀：femto-
【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
词根词缀：nano-, nan-, nanno-, -nania
【来源及含义】Greek: dwarf, dwarfish; pygmy; "little old man;" very small or tiny; also, a decimal prefix used in the international metric system for measurements
【相关描述】This prefix is used in the metric [decimal] system as billionth [U.S.] and thousand-millionth [U.K.], 10-9 [0.000 000 001]. The metric symbol for nano- is n.
【相关词根词缀】Related "few, small, less, little" word units:
micro-;
mini-;
mio-, meio-;
oligo-, olig-.
Related "metric" families:
yotta;
zetta;
exa;
peta;
tera;
giga;
mega;
kilo;
hecto;
deka;
deci;
centi;
milli;
micro;
pico;
femto;
atto;
zepto;
yocto.
【同源单词】bionanotechnology, nanandrous, nanism, nanization, nannandrous, nannofossil
词根词缀：pico-
【来源及含义】Italian: very small or from Spanish, "beak, tip, very small"; and from Latin, beccus, beak; also, a decimal prefix used in the international metric system for measurements
【相关描述】This prefix is used in metric [decimal] system as trillionth [U.S.] and billionth part [U.K.], 10-12 [0.000 000 000 001]. The metric symbol for pico- is p.
【相关词根词缀】 Related "metric" families: yotta; zetta; exa; peta; tera; giga; mega; kilo; hecto; deka; deci; centi; milli; micro; nano; femto; atto; zepto; yocto.
【同源单词】picoammeter, picoampere, picocurie, picofarad, picogram, picokelvin