isonome

isonome

(ˈaɪsəʊˌnəʊm)
n
(Botany) botany a line on a chart connecting points of equal abundance values of a plant species sampled in different sections of an area. Isonomes of different species from the same area are compared in studies of plant distribution
[C20: from iso- + Greek nomos rule, law]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014