superaddition [
`supɚə'dɪʃən]
n. 外加, 加上, 添上, 添加物
Superaddition \Su`per*ad*di"tion\, n.
The act of adding something in excess or something
extraneous; also, something which is added in excess or
extraneously.
This superaddition is nothing but fat. --Arbuthnot.