'Mesologarithm' definitions:

Definition of 'Mesologarithm'

From: GCIDE
  • Mesologarithm \Mes`o*log"a*rithm\, n. [Meso- + logarithm : cf. F. m['e]sologarithme.] (Math.) A logarithm of the cosine or cotangent. [Obs.] --Kepler. Hutton. [1913 Webster]