cologarithm
noun
co·log·a·rithm
(ˌ)kō-ˈlȯ-gə-ˌri-t͟həm 
-ˈlä-
: the logarithm of the reciprocal of a number
Cite this Entry
“Cologarithm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cologarithm. Accessed 30 Oct. 2025.
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