词根词缀：cerum-, cerumini-

【来源及含义】Greek: [from keros, beeswax, wax] formed of wax

【同源单词】cerumen, ceruminal, ceruminolysis, ceruminolytic, ceruminoma, ceruminosis

词根词缀：-crum

【来源及含义】Latin: a suffix; result of the act of, means of

【同源单词】ambulacrum, fulcrum, sacrum, simulacrum

词根词缀：rumin-, rumina-

【来源及含义】Latin: to chew over again, to chew the cud; to muse or to meditate; that is, to think about something in a deep and serious or dreamy and abstracted way or to think about something carefully, calmly, seriously, and for a long time

【同源单词】cud, obsessive rumination, rumen, rumenitis, ruminant, Ruminantia

词根词缀：strum-, strumo-, strumi-

【来源及含义】Latin: swollen gland, goiter

【同源单词】isthmectomy, struma, struma aberranta, struma aneurysmatica, struma maligna, strumectomy

词根词缀：-trum

【来源及含义】Latin: a suffix; result of, the act of, means of

【同源单词】antrum, auscultoplectrum, electrum, lustrum, monstrum, plectrum