HODOGRAPH

noun

19 Scrabble

19 WWF

H 4

O 1

D 2

O 1

G 2

R 1

A 1

P 3

H 4

Definition

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.