前綴acro- 來(lái)源于拉丁語(yǔ)akro-,akro-來(lái)源于akros意思是“at the end,at the top”，也就是說(shuō)，akros一直演變成前綴acro-意思基本上沒(méi)有變。為什么變成acro-，而不是演變成別的詞綴呢？這個(gè)可以通過(guò)音變規(guī)律找到答案，c-k發(fā)音/k/，二者發(fā)生了音變。前后綴在元音前變成了acr-，有的書(shū)籍上叫把這個(gè)叫做acro-的音變。

前綴acr-與詞根acr書(shū)寫(xiě)完全一樣的，但是一個(gè)是詞根，一個(gè)是前綴，不可混淆。

詞源：

A tip, height, or extremity.

[Greek akron, a tip or summit.]

An acrobat (Greek bainein, to walk) is literally someone who walks on tiptoe; an acropolis (Greek polis, city) was a fortified part of an ancient Greek city, typically on a hill; an acronym (Greek onuma,name) is a word formed from the initial letters of a phrase.

In medicine, the acromion is the outward end of the spine of the shoulder blade. Medical conditions include acromegaly (Greek megas, great), abnormal growth of the extremities and face caused by excessive production of growth hormone, and acrophobia, extreme or irrational fear of heights.

Some words that look as though they include this prefix actually contain Latin acer, pungent or acrid: acrolein, a sharp-smelling liquid; acrimonious, of an angry or bitter exchange.