Miðgarðsormur dragon or equator.
Þór fights Miðgarðsormur at ragnarök when fermi fields and bose fields, the broken symmetry (physics) merge back to super unification of the Unified Field of All the Laws of Nature.
See also Mother Earth
Listen to pronunciation: Miðgarðsormur
Please note that the accent is always on the first syllable in Icelandic