the way a particular person tends to do things
his MO isn't prescribing the solution but sparking more questions
Connor can't figure out the killer's MO
(of a disk or disk drive) magneto-optical
Medical Officer
that looks nasty—better go and see the MO
Missouri (in official postal use)
money order
a short period of time
hang on a mo!
the chemical element of atomic number 42, a brittle silver-grey metal of the transition series, used in some alloy steels
the chemical element molybdenum