The Collaborative International Dictionary of English v.0.48:

Ut \Ut\, n. (Min.)
   The first note in Guido's musical scale, now usually
   superseded by do. See Solmization.
   [1913 Webster]

WordNet (r) 3.0 (2006):

UT
    n 1: the local time at the 0 meridian passing through Greenwich,
         England; it is the same everywhere [syn: Greenwich Mean
         Time, Greenwich Time, GMT, universal time, UT,
         UT1]
    2: a state in the western United States; settled in 1847 by
       Mormons led by Brigham Young [syn: Utah, Beehive State,
       Mormon State, UT]
    3: the syllable naming the first (tonic) note of any major scale
       in solmization [syn: do, doh, ut]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

UT
       Universal Time [+0000] (TZ, GMT)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

UT
       Upper Tester