Unusually heavy or extended menstrual flow.

menstruum
Solvent used to extract compounds from plant and animal tissues and
preparing drugs.

messaline
Lightweight, soft, shiny silk cloth with a twilled or satin weave.

mezereon
Poisonous Eurasian ornamental shrub (Daphne mezereum) with fragrant
lilac-purple flowers and small scarlet fruit. The dried bark of this
plant was used externally as a vesicant (blistering agent) and
internally for arthritis.

miliary
Appearance of millet seeds. Small skin lesions with the appearance of
millet seeds.

mullein
Eurasian plants of the genus Verbascum, especially V. thapsus. Also
called flannel leaf, velvet plant.

muriate
Chloride; compound of chlorine with another element or radical;
especially, a salt or ester of hydrochloric acid called.

myrrh
Aromatic gum resin from trees and shrubs of the genus Commiphora of
India, Arabia, and eastern Africa, used in perfume and incense.