ymb-gān

ymb-gān, v: to go round (a circular course or an object), orbit. (umb-GAHN / ymb-ˈgaːn)

Medieval manuscript wheel diagram showing the Earth at the centre of concentric bands containing the names of the heavenly bodies and intervals of their orbits in Latin.
Cosmography; England, late 12th century; Walters Art Museum, W.73, f. 2v. [art.thewalters.org]

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