词根词缀：cosmo-, cosm-, cosmico-, cosm, -cosmia, -cosmos, -cosmic, -cosmics, -cosmical, -cosmology, -cosms

【来源及含义】Greek: kosmos, cosmos; "world, universe" [from its "perfect order and arrangement"]; to order, to arrange, to adorn; well-ordered, regular, arranged

【同源单词】acosmic, acosmist, anticosmetic, biocosm, biocosmetics, cosmecologist

词根词缀：pre-, prae-

【来源及含义】Latin: before [both in time and place]

【相关描述】The prefix prae- can actually be substituted for pre- because both of them are different spellings for the same prefix meaning "before".

【相关词根词缀】 Related before-word units: ante-; antero-; anti-; pro-. Related "time" units: aevum, evum; archaeo-, archeo-; Calendars; chrono-; horo-; Quotes: Time; tempo-.

【同源单词】preacquaint, preacquaintance, preagonal, pre-agricultural, preamble, preambular