Origin: Greek suffix -ology
Epistemology has 2 different meanings across 1 category:
the philosophical theory of knowledge
The branch of philosophy dealing with the study of knowledge; theory of knowledge, asking such questions as "What is knowledge?", "How is knowledge acquired?", "What do people know?", "How do we know what we know?", "How do we know it is true?", and so on.
The word comes from Ancient Greek, combining a root meaning "I know" with a suffix that denotes the study of something. It originally referred to the science or logic of knowledge before being introduced into English by Scottish philosopher James Frederick Ferrier.