词根词缀：decem-, decim-, deci-, dec-

【来源及含义】Latin: ten; also, a decimal prefix used in the international metric system for measurements

【相关描述】In the metric [decimal] system, deci- [DE si] is used to show 1/10 of a unit, as 10^-1 [0.1]; tenth [U.S.] and tenth part [U.K.]. The metric symbol is d.

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

【同源单词】dean, December, decemvir, decemviral, decemvirate, decennaries

词根词缀：duo-, du-

【来源及含义】Latin: two, double; a word element for the number "2"

【同源单词】conduplicate, deuce, double, double-dealing, doublet, doubletalk

词根词缀：duodecim-, duodec-

【来源及含义】Latin: twelve

【同源单词】duodecahedral, duodecennial, duodecimal, duodecimally, duodecimo

词根词缀：-enni-, -ennial, -ennium

【来源及含义】Latin: year, years

【同源单词】aere perennius, amillennialism, annual, biannual, bicentennial, biennia