词根词缀：clast-, clas-, -clastic, -clast, -clase, -clasia, -clasis, -clasis, -clasmic, -clasm

【来源及含义】Greek: break, break in pieces; broken, broken in pieces, crush; bend

【相关词根词缀】 Related break, broken-word units: frag-; rupt-.

【同源单词】aclasia, aclassis, aclastic, anaclastic, anemoclastic, angioclast

词根词缀：polio-

【来源及含义】Greek: gray; pertaining to the "gray matter" of the nervous system, brain, and the spinal cord

【同源单词】dyspigmentation, poliocidal, polioclastic, poliodystrophia, polioencephalitis, polioencephalomalacia