per orem

• per orum

From per, borrowing from classical Latin per (“through”), and orem as incorrectly formed accusative of Latin ōs (“mouth”).

per orem

1. (US, medicine) Alternative form of per os: via the mouth; orally.

• Typically occurring in nihil per orem (“nothing by mouth”). The declined form is erroneous.^[1] Proper Latin would be per os. It is also sometimes seen in another ungrammatical Latin form per orum.^[1]

• Emperor, emperor