cologarithm

[ koh-law-guh-rith-uh m, -rith-uh m, -log-uh- ]
/ koʊˈlɔ gəˌrɪð əm, -ˌrɪθ əm, -ˈlɒg ə- /

noun Mathematics.

the logarithm of the reciprocal of a number, often used in expressing the logarithm of a fraction: log 7/25 = log 7 + colog 25. Symbol: colog

Origin of cologarithm

First recorded in 1880–85; co- + logarithm

Words nearby cologarithm

colocholecystostomy, colocolostomy, colocynth, coloenteritis, colog, cologarithm, cologne, cologne brown, colomb-béchar, colombard, colombes

British Dictionary definitions for cologarithm

cologarithm
/ (kəʊˈlɒɡəˌrɪðəm) /

noun

the logarithm of the reciprocal of a number; the negative value of the logarithm the cologarithm of 4 is log 1/4 Abbreviation: colog