词根词缀：-ics, -tics [-ac after i]

【来源及含义】Greek: a suffix that forms nouns and is usually used to form names of arts and sciences

【同源单词】acoustics, acoustoelectronics, acousto-optic, actinogenics, actinotherapeutics, actinotherapy

词根词缀：narco-, narc-, -narcotic, narcotico-, -narcosis, -narcoticism

【来源及含义】Greek: numbness, dullness; sleep, stupor, torpor; benumb, deaden

【相关词根词缀】 Related "sleep" units: dorm-; hypno-; letho-; oneiro- (dream); somni-; sopor-.

【同源单词】acronarcotic, antinarcotic, autonarcosis, denarcotize, electronarcosis, encephalonarcosis