D defs.my
Entry 2 senses Webster, 1913

Heterodromous

· Het·er·od·ro·mous · IPA
01 a. Having spirals of changing direction.
  1. 1.
    Having spirals of changing direction.(Bot.)
  2. 2.
    Moving in opposite directions; -- said of a lever, pulley, etc., in which the resistance and the actuating force are on opposite sides of the fulcrum or axis.(Mech.)