lognormal

adj

1. (not-comparable)Describing a logarithmic function that has a normal distribution.

noun

1. A logarithmic function that has a normal distribution.

   “The mgf of the low and high amplitude regions of a single lognormal variable and the derivatives is examined and attention is drawn to the effect of variance. The problem of inversion of the mgf/chf of a sum of lognormals to obtain the CDF/pdf is considered with special reference to methods related to Post Widder technique, Gaussian quadrature and the Fourier series method.”