词根词缀：mens-

【来源及含义】Latin: measure

【相关词根词缀】 Related "measure" and "metric" words and charts: meter-, metro-; Metric Chart of Units; Metric-Length Converter; Metric Units and Links.

【同源单词】Biometrics, commensal, commensalism, commensurable, commensurably, commensurate

词根词缀：meter-, metro-, metr-, -metrical, -metrically, -metron, -metric, -metrist, -meter, -meters, -metry, -metre

【来源及含义】Greek: measure

【相关词根词缀】 Related "measure" and "metric" words and charts: mens-; Metric Chart of Units; Metric-Length Converter; Metric Units and Links.

【同源单词】absorptiometry, accelerometer, acetimeter, acetimetry, acidimeter, acidimetry

词根词缀：myria-, myrio-, myri-

【来源及含义】Greek: ten thousand; very numerous, countless

【相关描述】A combining form meaning "10,000", used especially, in the names of some metric units equal to 10,000 of the unit denoted by the base word; such as, myriagram; myriameter; however, it is not in official use in the International System of Units.

【同源单词】myriacanth, myriacanthous, myriachit, myriad, myriad, myriad-minded

词根词缀：tera-

【来源及含义】Greek: "monster, marvel"; a decimal prefix used in the international metric system for measurements

【相关描述】Used in the metric [decimal] system as one trillion [U.S.] and billionfold [U.K.]: 10¹² [1 000 000 000 000] or a million million. The metric symbol for tera- is T.

According to the Academic Press Dictionary of Science and Technology, Harcourt Brace Jovanovich, Publishers, 1992: Tera- comes "from a Greek term meaning 'marvel' or 'monster,' with the sense that this is a huge and marvelous quantity." Oh, PLEASE!

It would make much more sense to have tera based on tetra- (Greek), "four" rather then terato-, "monster, marvel"; which has no relative connection with this or any other metric unit.

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

【同源单词】terabit, terabyte, teracurie, teracycle, teraflop, terahertz