Emily Dickinson Lexicon
Definition for MES-O-LOG'A-RITHM
MES-O-LOG'A-RITHM, n. [Gr. μεσος, middle, and logarithm.]
A logarithm of the co-sines and co-tangents. Kepler. Harris. The former is called by Napier an antilogarithm, the latter a differential. Encyc.
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