Chirality and achirality terminology This is more terminological/linguistical question than technical.  
Suppose I have a periodical structure which I would describe as
"chiral". See "chirality":
https://en.wikipedia.org/wiki/Chirality
And a similar structure, but achiral. And say, I apply morphing to the chiral structure to make it achiral and vice versa.
E.g. this image demonstrate this:  
 
Question


*

*Which terms one would apply to describe "the amount, or grade, of 
chirality in a structure"?  

*Which terms one would apply to describe the process of "increasing/decreasing this amount of chirality"?  


Yes it is possible to measure quantitatively how a structure deviates from chirality.
It is not just "chiral" or "achiral".
Theory: see the papers cited on http://petitjeanmichel.free.fr/itoweb.petitjean.html
