Source : Webster's Revised Unabridged Dictionary (1913)

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   superseded by do.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

Source : WordNet®

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}, {UT1}]
     2: a state in the western United States; settled in 1847 by
        Mormons led by Brigham Young [syn: {Utah}, {Beehive State},
         {Mormon State}]
     3: the syllable naming the first (tonic) note of any major
        scale in solmization [syn: {do}, {doh}]