spherograph

Fetched 2026-10-26 (cache).

Synonyms: spirograph, siderograph

Antonyms: spirograph, siderograph

Related words from Datamuse; suggestions, not definitions.

Noun

1. An [[instrument]] for facilitating the practical use of [[spherics]] in [[navigation]] and [[astronomy]], constructed of two cardboards containing various [[circle]]s, turning upon each other in such a manner that any possible [[spherical triangle]] may be readily found, and the [[measure]]s of the parts read off.

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