1.
The answer is they're White House acronyms.
这是白宫所惯用的首字母缩略词：
2.
characterized by the use of acronyms.
具有使用首字母缩略词的特点。
3.
Research on Lettered Abbreviations in the New Period Based on Lettered Words Lexicon;
从《字母词词典》看新时期字母缩略语
4.
alphabetic acronym
字母缩略词(按字母分读, 如USA)
5.
What do these acronyms and abbreviations mean?
这些字首母缩略字及缩写字意味着什么？
6.
To shorten(a word or words) by leaving out letters or syllables.
省略，简略通过去除字母或音节来缩短（单词）
7.
The first letter of a word.
字首单词的第一个字母
8.
Remarks on “Words with Foreign Letters” and English Abbreviations in Written and Spoken Chinese;
关于外文字母词和原装外文缩略语问题
9.
"D" is the initial letter of the word "day".
“day”一词的起首字母是“d”。
10.
Reduce the amout of information you need to store by utilizing grouping, mnemonics, or acronyms.
使用归类、记法或者首字母缩拼词等方法减少你的信息存储量。
11.
To shorten(a word or words)by omitting or combining some of the letters or sounds.
略语通过省略或结合某些字母或音素使（一个或几个单词）缩短
12.
and then scribble on the chart the initials @G. O. K.
写下缩略字母“G. O. K. ”。
13.
he refused to put the initials FRS after his name.
他拒绝在名字后面写下首字母缩写。
14.
"E" is the first letter in the word "electronic", so its called E-mail for short.
"E"是"electronic"这个词的第一个字母，所以E－mail是一种缩略形式。
15.
NMI (no middle initial)
无中名的姓名首字母缩写
16.
Designating the first letter or letters of a word.
首字母的一个单词的第一个或前几个字母
17.
Soviet bureaucratese, especially the tongue - twisting acronyms and alien - sounding portmanteau words of the state security apparatus(Strobe Talbott)
苏联官僚语言，尤其是描述保安体制的绕口的首字母简略词和外来语组合词(斯特罗布 塔尔博特)
18.
a word formed from the initial letters of a multi-word name.
由多个单词首个字母组成。