An Etymological Dictionary of Astronomy and Astrophysics

1. A tendency to use one hand rather than the other.
   

2. The property of an object (as a molecule) of not being identical with its mirror image. Same as → chirality (Merriam-Webster.com).
   See also: → B-mode polarization, → E-mode polarization.

Etymology (EN): → hand + -ed + → -ness.

Etymology (PE): Dastâli, from dast, → hand, + -al, → -al, + noun suffix -i, on the model of → chirality.