词根词缀：-ician

【来源及含义】Greek: a suffix; meaning, specialist in, practitioner of

【同源单词】academician, acoustician, aesthetician, agrotechnician, apician, arctician

词根词缀：theor-

【来源及含义】Greek (theorein, theoria); Latin (theoria): looking at, contemplation, spectator, speculation; viewing

【同源单词】theorem, theoretical, theoretician, theoretics, theorize, theory