RABDOLOGY
Source: 566, 567
rabdology. Rabdology, n. a method of performing mathematical operatins by little square rods
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Rab‐dol″o‐gy (–dŏl″ō̍‐jy̆), n. [[Gr. ρἅβδοσ 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.]