Definition of "MH"

MH

proper noun
1. Abbreviation of Maharashtra, a state in India.
noun
countable and uncountable, plural MHs
1. Initialism of mental health.
2. Abbreviation of methylhydrazine.
adjective
1. (philately) Initialism of mint, hinged.
  Quotations
  Loose mixed lot, with duplication, of the Portugal & Colonies first decimal definitive designs. Very mixed condition, from VF to junk, all "mint" in some form or another, some MNH, some MH, some MHH, some MNG, etc.
  1995 February 12, R L Silverman, “For Sale: Portugal/Colonies "Ceres" 1912-1931”, in rec.collecting.stamps‎ (Usenet)