Rabdology \Rab*dol"o*gy\ (r[a^]b*d[o^]l"[-o]*j[y^]), n. [Gr.
"ra`bdos rod, stick + -logy: cf. F. rabdologie.]
The method or art of performing arithmetical operations by
means of Napier's bones. See {Napier's bones}. [Written also
{rhabdology}.]
[1913 Webster]