alti-，alto- [L] = high 高 

altimeter n. 测量计，高度表 【-meter n. = a measuring device]

altitude n. 高，高度 [-tude]

altocumulus n. [气]高积云（cumulus n. 积云）

amb(i)- [L] = both 二者；around 周围 

ambidexter n. 左右手都善用的人 [dexter = right-handed] 

ambivalence n. 矛盾心理[= value] 

ambiance n. 环境，周围[-ance] 

ambition n. 志向；野心[it =to go] 

ambiguous a. 模棱两可的[gu(←ag) = to drive]

amphi- [GK]= on both sides 两边；around 周围 

amphibian n. 两栖动物或植物[bi=living thing] 

amphibology, amphiboly n. 模棱两可 [bol = to struck] 

amphitheatre n. 圆形剧场，大会堂

ana- [GK] = back 回；again 再；up 向上

anachronism n. 弄错年代 [chron — time] 

anabiosis n. [医]复苏，回生[bi = life] 

anagram n. 变移字母构成的另一单词 [-gram= sth written]

analysis n. 分析 [ly — to loosen] 

anatomy n. 解剖 [-tomy = cutting]

anthrop(o)- [GK] = human being 人类

anthropology n. 人类学 [-logy = the science of] 

anthropomorphic a. 拟人的 [morph = form] anthroposociology n. 人类社会学（sociology n. 社会学） 

anthropotomy n. 人体解剖学[-tomy = cutting]