The Collaborative International Dictionary
Stelography
Stelography \Ste*log"ra*phy\, n. [Gr. ? a post, slab, pillar +
-graphy: cf. Gr. ? an inscription on a tablet.]
The art of writing or inscribing characters on pillars. [R.]
--Stackhouse.
Wiktionary
stelography
n. The art of writing or inscribing characters on pillars.