Menstrum or Menstruum: How To spell?
The word Menstrum is misspelled against Menstruum, a noun meaning "Any substance which dissolves a solid body; a solvent."
Menstruum has double "uu" is mispronounced as "u"Remember double 'UU' in between the strings menstr & m which should not be misspelled with single 'U'
Wrong Spelling:  menstr-u-m  Correct Spelling:  menstr-uu-m 
Check more misspelled words of Menstruum to spell it correct.