See also: mmh English Noun MMH (chemistry) Abbreviation of monomethylhydrazine. Related terms (monomethylhydrazine): MH (methylhydrazine) DMH (dimethylhydrazine) UDMH (unsymmetric dimethylhydrazine) SDMH (symmetric dimethylhydrazine) TMH (trimethylhydrazine) Anagrams HMM, hmm, mhmWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads