Source : Webster's Revised Unabridged Dictionary (1913)

Dynamo \Dy"na*mo\, n.
   A dynamo-electric machine.

Source : WordNet®

dynamo
     n : generator consisting of a coil (the armature) that rotates
         between the poles of an electromagnet (the field magnet)
         causing a current to flow in the armature

Source : Free On-Line Dictionary of Computing

DYNAMO
     
        DYNamic MOdels.  A language for continuous {simulation}
        including economic, industrial and social systems, developed
        by Phyllis Fox and A.L. Pugh in 1959.
     
        Versions include DYNAMO II, DYNAMO II/370, DYNAMO II/F, DYNAMO
        III and Gaming DYNAMO.
     
        ["DYNAMO User's Manual", A.L. Pugh, MIT Press 1976].