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

Medieval Latin, literally, menses, alteration of Latin menstrua

First Known Use: 1559

Medical Dictionary

noun men·stru·um \ˈmen(t)-strə(-wə)m\

plural men·stru·ums or -strua \-str(ə-w)ə\

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

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