# Definition of *Napierian logarithm* in English:

## Napierian logarithm

### Pronunciation /nāˌpiəriən ˈlôɡəˌriT͟Həm/ /neɪˌpɪərɪən ˈlɔɡəˌrɪðəm/ /ˈläɡəˌriT͟Həm/ /ˈlɑɡəˌrɪðəm/

### noun

*‘The Napierian logarithm can be given in terms of the modern logarithm by solving equation for, giving’*

*‘The D 37 of each protein was obtained from the curve of the Napierian logarithm of the remaining intact protein versus radiation dose.’**‘In any case it is curious to note that the Napierian logarithm of 2 was printed before the year 1500, with an approximation of 3 per 100.’**‘For Napierian logarithms, the base is number ‘e’, called as Napier's base named after the mathematician Napier.’**‘The existence of e is implicit in John Napier's 1614 work on logarithms, and natural logarithms are sometimes inexactly dubbed Napierian logarithms.’*

**Origin**

Early 19th century named after J. Napier (see Napier, John).