Bible Dictionaries
Rabdology
Webster's Dictionary
(n.) The method or art of performing arithmetical operations by means of Napier's bones. See Napier's bones.
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Bibliography Information
Webster, Noah. Entry for 'Rabdology'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​r/rabdology.html. 1828.