Source : Webster's Revised Unabridged Dictionary (1913)

Monocracy \Mo*noc"ra*cy\, n. [Mono- + -cracy, as in democracy.]
   Government by a single person; undivided rule. --Sydney
   Smith.

Source : WordNet®

monocracy
     n : a form of government in which the ruler is an absolute
         dictator (not restricted by a constitution or laws or
         opposition etc.) [syn: {dictatorship}, {absolutism}, {authoritarianism},
          {Caesarism}, {despotism}, {one-man rule}, {shogunate}, {Stalinism},
          {totalitarianism}, {tyranny}]