m, -struh
m]

men·stru·a (měn'strōō-ə) n. A plural of menstruum. |
menstruum men·stru·um (měn'str&oomacr;-əm)
n. pl. men·stru·ums or men·stru·a (-str&oomacr;-ə)
A solvent, especially one used in extracting compounds from plant and animal tissues and preparing drugs.