公元15世纪，aggregate从拉丁文书面单词aggregatus进入英语，表示物质的集合，结集，分子聚合等意思。拉丁文原意为成群联合在一起的（associated，united in a flock ），前缀ag-是前缀ad-的变体，表示增加(add to)的意思，词根gregare表示牧群（herd）的意思，两者的结合在英语中有了引入到一群（to lead to a flock）的意思。
英语单词disgregate表示分离或分散的意思，分别和separate，scatter同义，可做及物动词和不及物动词。在它的拉丁文原型disgregare中，前缀dis-表示分离(apart)，词根gregare表示收集(to collect)。
上述这三个单词还有一些远亲，它们是congregation, egregious, 和segregate。这些单词共同的词根greg-来自以耨语系的词根ger-。词根greg-表示群（flock）的意思，它的表亲ger-表示收集(to gather)的意思。
用法举例：
In an aggregate the particulars are less intimately mixed than in a compound. [1913 Webster]
In the aggregate : collectively; together. [1913 Webster]
Bion's perception of the disgregating effects of boredom and complete lack of discipline, all formed part of the real personal emotional experience on which his theories lie." [Wilfred R. Bion; War Memoirs, 1917-19; 1997. -Anu Garg (garg wordsmith.org)]In an aggregate the particulars are less intimately mixed than in a compound. [1913 Webster]
In the aggregate : collectively; together. [1913 Webster]
Other references:
Online Etymology Dictionary (www.etymonline.com)
The DICT Development Group (www.dict.org)
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