“首字母缩写词”怎么说如题.比如要表达IELTS是由XXXX几个词组成的首字母缩写词.

“首字母缩写词”怎么说
如题.
比如要表达IELTS是由XXXX几个词组成的首字母缩写词.

abbreviation
eg.IELTS is the abbreviation of XXXX

be composed by initials of **

initial

initial abbreviate
IELTS is initial abbreviates for XXXX