micromort
Also found in: Acronyms, Wikipedia.
micromort
(ˈmaɪkrəʊˌmɔːt)n
a unit of risk equal to a one-in-a-million chance of dying
[from micro + mort(ality)]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014