Alethiology (or Alethology) literally means `the study of truth,` but can more accurately be translated as `the study of the nature of truth.` It could be argued that this is synonymous with epistemology, the study of knowledge, and that dividing the two is mere semantics, but sometimes a distinction is made between the two. Epistemology is th...
study of truth
• (n.) The science which treats of the nature of truth and evidence.
<study> The science which treats of the nature of truth and evidence. ... Origin: Gr. Truth. ... (04 Mar 1998) ... 
A·le`thi·ol'o·gy noun [ Greek ... truth + -logy .] The science which treats of the nature of truth and evidence. Sir W. Hamilton. 
alethiology 1. The science of the nature of truth and evidence. 2. The doctrine of truth; that part of logic that is concerned with truth.
the branch of logic dealing with truth and error.