cologarithm
/koʊˈlɑɡərɪðəm/
noun
- The logarithm of the reciprocal of a number; the negative of the logarithm of a number.
- The cologarithm of 100 is -2 because the logarithm of 100 is 2.
- In some older textbooks, the cologarithm is written as colog.
- To simplify the calculation, the engineer used the cologarithm of the value.