词根词缀：cylindro-, cylindr-, cylindri-

【来源及含义】Greek > Latin: roller, roller-shaped figure; used in the sense of being "roller-shaped, column-shaped"

【同源单词】cylinder, cylindrical, cylindroid, semicylindrical, spherocylinder

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