Definition of "lognormal" [lognormal]

• Mathematics Of, relating to, or being a logarithmic function with a normal distribution. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "There is definitely a pattern in the number of records exposed by data breaches, and it follows a so-called lognormal distribution."
• "Similar considerations suggest that the form of the stochastic process distribution, whether it is normal, lognormal, or otherwise, is superfluous."
• "Geometric Brownian motion, in contrast, is such that each random variable St has a lognormal distribution."