词根词缀：atto-

【来源及含义】Danish or Norwegian: eighteen; 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 quintillionth [U.S.] and trillionth part [U.K.], 10^-18 [0.000 000 000 000 000 001]. The metric symbol for atto- is a.

【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; femto; zepto; yocto.

【同源单词】attoampere, attofarad, attogram, attoscience, attosecond, attotesla

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