orb

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orb †(old astron.) hollow sphere surrounding the earth; †circle, ring; heavenly body XVI; eyeball, eye XVII; cross-surmounted globe of the regalia XVIII. — L. orbis ring, round surface, disc.
Hence orbed (-ED2) XVI. So orbicular circular, spherical. XVI. — late L. orbiculāris, f. L. orbiculus, dim. of orbis; see -CULE, -AR.

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