词根:-ac-, -acu-, -acr-, -acer-, -acet-
【词根含义】:尖,酸
【词根来源】:-ac-来源于拉丁语动词aceo, acere, -, -(尖,酸); -acu-来源于拉丁语动词acu.o, acu.ere, acu.i, acut.us(使尖锐); -acr-和-acer-来源于希腊语形容词akros(最高的,末端的)和拉丁语形容词acer, acris(尖利的,辛辣的); -acet-来源于拉丁语名词acetum, aceti, n(醋)。均可追溯至原始印欧语ak-(尖,锋利)。
【同源单词】:acid, aciform, acme, acupuncture, acute
词根:acid, acri, acrid, acu = sour, sharp, 表示“尖, 酸, 锐利”
acid 酸的
acidify 酸化(acid+ify…化→酸化)
acidity 酸度,酸性(acid+ity性质→酸性)
acidulous 微酸的(acid+ulous有…的→有酸味的)
acrid 辛辣的;类刻的(acrimony的形容词)
acute 尖锐的,敏锐的
acuity 尖锐,敏锐(acu+ity性质→尖的性质→尖锐)
acumen 敏锐,聪明(acu+men表示名词→尖→敏锐)
acupuncture 针炙(acu尖+punct点+ure→用尖〔针〕点→针炙)
acme 顶点,顶峰(acumen的变体)
词根词缀:acous-, acou-, acouo-, acoustico-, acouto-, acousti-, -acousia, -acousis, -acoustical, acu-, -acusis-, -acusia
【来源及含义】Greek: akoustikos, to hear, hearing; to listen, listening
【相关词根词缀】 Related "hear, hearing; listen, listening" units: audio-; ausculto-.
【同源单词】acouasm, acoubuoy, acouesthesia, acoumeter, acouophone, acouophonia
词根词缀:acuto-, acut-, acuti-, acu-, -cusis; also, agu-
【来源及含义】Latin: sharp, to sharpen, point; needle, pin
【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "sour, sharp": acerb-; aceto-; acid-; acies- (not "sour"); oxy-; pung- (not "sour").
【同源单词】acicula, acicular, acicular ice, aciculate, aciculate, aciculiform