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

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