A body or collection of myths belonging to a people and addressing their origin, history, deities, ancestors, and heroes.
A body of myths associated with an event, individual, or institution: "A new mythology, essential to the . . . American funeral rite, has grown up"(Jessica Mitford).
The field of scholarship dealing with the systematic collection and study of myths.
[French mythologie, from Late Latin mȳthologia, from Greek mūthologiā, story-telling : mūthos, story + -logiā, -logy.] my·thol'o·gist n.
[mi-thol-uh-jist] 
ə