Source : Webster's Revised Unabridged Dictionary (1913)

Heterotaxy \Het"er*o*tax`y\, n. [Hetero- + Gr. ? an arrangement,
   fr. ? to arrange.] (Biol.)
   Variation in arrangement from that existing in a normal form;
   heterogenous arrangement or structure, as, in botany, the
   deviation in position of the organs of a plant, from the
   ordinary or typical arrangement.

Source : WordNet®

heterotaxy
     n : any abnormal position of the organs of the body [syn: {transposition}]