men·stru·um (měn'strōō-əm) n.
pl.men·stru·ums or men·stru·a (-strōō-ə) A solvent, especially one used in extracting compounds from plant and animal tissues and preparing drugs.
[Middle English, menstruation, from Medieval Latin mēnstruum, sing. of Latin mēnstrua, menses; see menstruate.]
Main Entry: men·stru·um Pronunciation: 'men(t)-str&(-w&)m Function: noun Inflected Form: pluralmen·stru·umsormen·strua/-str(&-w)&/ : a substance that dissolves a solid or holds it in suspension :SOLVENT
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.