Dictionary

menstruum

noun men·stru·um \ˈmen(t)-strü-əm, -strəm\
plural men·stru·ums or -strua \-strü-ə, -strə\

Definition of MENSTRUUM

:  a substance that dissolves a solid or holds it in suspension :  solvent

Origin of MENSTRUUM

Medieval Latin, literally, menses, alteration of Latin menstrua
First Known Use: 1559

menstruum

noun men·stru·um \ˈmen(t)-strə(-wə)m\   (Medical Dictionary)
plural men·stru·ums or -strua \-str(ə-w)ə\

Medical Definition of MENSTRUUM

:  a substance that dissolves a solid or holds it in suspension :  solvent

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April 27, 2015
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