celidographyn.
/sɛlɪˈdɒɡrəfi/ A description of the spots in the sun or planets.
ΚΠ
1753 Chambers's Cycl. Suppl. [has Celidographia from Bianchini 1729.]]
1775 in J. Ash New Dict. Eng. Lang. ; and in mod. Dicts.
This entry has not yet been fully updated (first published 1889; most recently modified version published online March 2018).
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n.1775