yet another MT meaning   (link)

http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/ewhat-is-mt.html
Mersenne Twister(MT) is a pseudorandom number generating algorithm developped by Makoto Matsumoto and Takuji Nishimura (alphabetical order) in 1996/1997. An improvement on initialization was given on 2002 Jan.
MT has the following merits:

* It is designed with consideration on the flaws of various existing generators.
* The algorithm is coded into a C-source downloadable below.
* Far longer period and far higher order of equidistribution than any other implemented generators. (It is proved that the period is 2^19937-1, and 623-dimensional equidistribution property is assured.)
* Fast generation. (Although it depends on the system, it is reported that MT is sometimes faster than the standard ANSI-C library in a system with pipeline and cache memory.) (Note added in 2004/3: on 1998, usually MT was much faster than rand(), but the algorithm for rand() has been substituted, and now there are no much difference in speed.)
* Efficient use of the memory. (The implemented C-code mt19937.c consumes only 624 words of working area.)