An ending meaning "-parted," added to a number to create an adjective. Thus "8-merous" means "having 8 parts." The suffix, frequently used by botanists, is derived from the Greek meros, "part"
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}