What does NT stand for?

A. NT actually stands for Northern Telecom but Microsoft licensed it and in the Windows sense stands for New Technology. Its also interesting to note its heritage
RSX -> VMS -> ELN -> NT all major designs of David Cutler
Also VMS +1 letter = WNT (Windows NT) :-) (aka HAL and IBM in 2001)

Another theory is that the NT acronym orginally came from the Engineers working on it. The acronym stands for N-Ten, the code name for the i860 chip that NT was being tested on.