词根词缀：cyclo-, cycl-, -cycle, -cyclic, -cyclical, -cycles

【来源及含义】Greek: around, round, circle, circular

【相关词根词缀】 Related "around, round, surrounding" units: ambi-; ampho-; circ-; circum-; gyro-; peri-.

【同源单词】acyclic, anticyclone, anticyclonic, bicycle, biogeochemical cycle, cycle

词根词缀：epi-, ep-

【来源及含义】Greek: above, over, on, upon; besides; in addition to; toward; among

【相关词根词缀】 Related "above, over, beyond the normal, excessive" word units: hyper-; super-, supra-, sur; ultra-, ult-.

【同源单词】anepigraphous, cotyledon, endoepidermal, ephemeral, epibasal, epibasidium