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: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