axiology
/ˌaksēˈäləjē/
noun
PHILOSOPHY
noun: axiology; plural noun: axiologies
- the study of the nature of value and valuation, and of the kinds of things that are valuable.”one of the central questions in axiology is this: what elements can contribute to the intrinsic value of a state of affairs?”
- a particular theory of axiology.”all consequentialists start with an axiology which tells us what things are valuable or fitting to desire”
Origin

early 20th century: from French axiologie, from Greek axia ‘worth, value’.