词根词缀：gram-, -gram-, -gram, -grammatic, -grammatical, -grammatically, -gramme, -grammic
【来源及含义】Greek: write, writing, something written, a written record, a recording; letters; words; later, a small weight, a unit of mass in the metric system
【相关描述】A unit of weight in the metric system from 1797 gramme, borrowing of French gramme, from Late Latin gramma, "small weight"; from Greek gramma, "small weight"; originally, "something written"; from the stem of graphein, "to draw, to write".
【相关词根词缀】Related "writing" word units: glypto-; graph-; scrib-, script-.
【同源单词】accelerogram, achillogram, acoustogram, acrogram, acronym, actinogram
词根词缀：nano- [NA noh], 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