词根词缀：mater-, matri-, matro- matr-

【来源及含义】Latin: mother, mama, mom; mum [British]

【同源单词】alma mater, dura mater, mater, materfamilias, maternal aunt, maternal dystocia

词根词缀：opsi-, ops-

【来源及含义】Greek: late, later

【同源单词】opsanthosis, opsidentia, opsigamy, opsigenes, opsimath, opsimathy