The material universe; the cosmos; (also rarely) a system of celestial objects. Also figurative. Chiefly with the.

A zone or division of the world or universe, as the air, heaven, etc. Also with of: a metaphysical zone or place of this sort considered as…

A region or zone forming part of a cosmological system. Now archaic.

Philosophy. Logically conceivable; having the property, whether or not it actually exists, of not being excluded from existence by being…