Source : Webster's Revised Unabridged Dictionary (1913)

Isodrome \I"so*drome\, n. [Iso- + Gr. ? course.] (Nav.)
   A method of moving a fleet from one formation to another, the
   direction usually being changed eight points (90[deg]), by
   means of paths of equal length for each ship. It is
   prohibited in the United States navy.