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

词根词缀：milli-, mille-, mill-, mili-

【来源及含义】Latin: thousand; a decimal prefix used in the international metric system for measurements; including, thousandth, thousandths

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

【同源单词】bimillennium, mile, mileage, millefiori, millenary, millennial