We don't have synonyms for hodograph yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are photograph, monograph and holograph.
(n) :
(physics, mathematics) A curve described by the moving extremity of a line whose other end is fixed, this line being constantly parallel to the direction of motion of, and having its length constantly proportional to the velocity of, a point moving in any path; used in investigations respecting central forces.
(n) :
(physics, mathematics) A curve described by the moving extremity of a line whose other end is fixed, this line being constantly parallel to the direction of motion of, and having its length constantly proportional to the velocity of, a point moving in any path; used in investigations respecting central forces.