词根词缀：oo-

【来源及含义】Greek: egg or eggs; used in an extended sense as the ovum

【同源单词】ooblast, oocenter, oocephalus, oocinesia, oocinesis, oocinete

词根词缀：sphero-, spher-, -sphere-

【来源及含义】Greek: ball, round, around; globe, global; body of globular form; by extension, circular zone, circular area

【相关词根词缀】 Related ball, sphere-word units: glob-, glom-; hemoglobin-.

【同源单词】adminisphere, aerosphere, allobiosphere, anthroposphere, asphere, aspheric