The Collaborative International Dictionary
Epigraphical
Epigraphic \Ep`i*graph"ic\, Epigraphical \Ep`i*graph"ic*al\, a. Of or pertaining to epigraphs or to epigraphy; as, an epigraphic style; epigraphical works or studies.
Wiktionary
epigraphical
a. epigraphic
Usage examples of "epigraphical".
Langdon had once worked on a series of Baconian manuscripts that contained epigraphical ciphers in which certain lines of code were clues as to how to decipher the other lines.