celestial sphere

Fetched 2026-10-26 (cache).

Synonyms: celestial spheres

Antonyms: celestial spheres

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|astronomy}} The apparent outer [[limit]] of [[space]]; an [[abstract]] [[sphere]] of [[infinite]] [[radius]] which serves as the imaginary [[backdrop]] for [[celestial]] objects, and of which the visible sky is one [[hemisphere]].
2. One of the [[nest]]ed [[concentric]] [[transparent]] [[sphere]]s around the [[Earth]] in which [[celestial]] [[body|bodies]] such as [[star]]s and [[planet]]s were said to be [[embed]]ded in [[ancient]] and [[medieval]] [[Western]] [[cosmology]], and whose [[rotation]] was said to [[produce]] the [[motion]] of such bodies.

Proper noun

1. {{alternative spelling of|en|celestial sphere}}.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.