What does m4 stand for?

m4 stands for "macro processor version 4"

How to abbreviate "macro processor version 4"?

"macro processor version 4" can be abbreviated as m4

What is the meaning of m4 abbreviation?

The meaning of m4 abbreviation is "macro processor version 4"

What does m4 mean?

m4 as abbreviation means "macro processor version 4"