- a solvent, esp one used in the preparation of a drug
WordReference Random House Unabridged Dictionary of American English © 2026
men•stru•um
(men′stro̅o̅ əm, -strəm),USA pronunciation n., pl. -stru•ums, -stru•a
-
(-stro̅o̅ ə).USA pronunciation
- a solvent.
- Medieval Latin (in Latin only plural mēnstrua occurs). See menstrual
- special use of Middle English menstruum monthly period 1350–1400
Collins Concise English Dictionary © HarperCollins Publishers::
menstruum /ˈmɛnstrʊəm/ n ( pl -struums, -strua /-strʊə/) obsolete