MT was firstly named 
"Primitive Twisted Generalized Feedback Shift Register Sequence"
by a historical reason.
<hr>
Makoto: Prof. Knuth said in his letter "the name is mouthful."
<br>
Takuji:........
<br>
<br>
a few days later
<br>
Makoto:Hi, Takkun, How about "Mersenne Twister?"
Since it uses Mersenne primes, and it shows that it has its ancestor
Twisted GFSR.
<br>
Takuji:Well.
<br>
Makoto:It sounds like a jet coaster, so it sounds quite fast,
easy to remember and easy to pronounce.
Moreover, although it is a secret, it hides in its name the initials
of the inventors.
<br>
Takuji:.......
<br>
Makoto:Come on, let's go with MT!
<br>
Takuji:....well, affirmative.
<br>
<br>
Later, we got a letter from Prof. Knuth saying
"it sounds a nice name."
:-)