diatropism

noun3

1. •
   The growth or movement of a plant or animal in a direction perpendicular to a stimulus.

   • As a special result of diatropism, a transverse position is assumed which is exactly at right angles to the direction in which the iinfluence which acts as a stimulus is exerted. — 1903
2. •
   An orthogonal arrangement of groups of atoms within a molecule, often associated with aromaticity.

   • The phenomena of antiaromaticity and paratropism are less well known than those of aromaticity and diatropism. — 1984
3. •
   The choice of an object of libidinal attachment on the basis of dissimilarity from early childhood protective and parental figures.