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：-mega-

【词根含义】：巨大的,兆,百万

【词根来源】：-mega-来源于希腊语megas(巨大的)。

【同源单词】：acromegaly, megaphone

词根词缀：acro-, acr-

【来源及含义】Greek: high, highest, highest point; top, tip end, outermost; extreme; extremity of the body

【同源单词】acroagnosis, acroanesthesia, acroarthritis, acroasphyxia, acroataxia, acrobat

词根词缀：megalo-, megal-, -megalia, -megaly

【来源及含义】Greek: large, big, very big

【相关词根词缀】 Related "big, large, great" words: grand-; macro-; magni-; major-; maxi-; mega-.

【同源单词】acromegalogigantism, acromegaloidism, acromegaly, adenomegaly, adrenomegaly, angiomegaly