Milorganite. Yes, that would be Mil-orga-nite. As in, MILwaukee ORGAnic NITrogEn. Or, more clearly MILwaukee ORGAnic NITE-soil.
If we can have acronyms with different public and private expansions in our shop, I'm assuming the folks in Milwaukee who are selling dried, processed sewer sludge as fertilizer do too. It's all natural! :-)