Dictionary

cologarithm

cologarithm

noun co·log·a·rithm \(ˌ)kō-ˈl-gə-ˌri-thəm, -ˈlä-\

Definition of COLOGARITHM

:  the logarithm of the reciprocal of a number

First Known Use of COLOGARITHM

1881

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