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：semi-

【来源及含义】Latin: half, partly, twice

【同源单词】semi-acid, semi-amplexicaul, semiannual, semiannually, semiaquatic, semiarid